Which Pair Of Compounds Has The Same Empirical Formula?A. CH And C 2 H 2 C_2H_2 C 2 H 2 B. C 2 H 6 C_2H_6 C 2 H 6 And CH C. C 3 H 8 C_3H_8 C 3 H 8 And C 3 H C_3H C 3 H D. C 2 H 2 C_2H_2 C 2 H 2 And C 2 H C_2H C 2 H
In chemistry, the empirical formula of a compound is a simplified representation of its chemical composition, expressed in the smallest whole-number ratio of atoms of each element present in the compound. It is a fundamental concept in chemistry that helps us understand the composition and properties of compounds. In this article, we will explore the concept of empirical formula and use it to determine which pair of compounds has the same empirical formula.
What is Empirical Formula?
The empirical formula of a compound is a representation of its chemical composition in the simplest whole-number ratio of atoms of each element present in the compound. It is a way to express the composition of a compound in a concise and simplified manner. The empirical formula is usually expressed as a ratio of atoms of each element, with the smallest possible whole numbers.
For example, the empirical formula of water (H2O) is HO, which represents the ratio of hydrogen to oxygen atoms in the compound. Similarly, the empirical formula of glucose (C6H12O6) is CH2O, which represents the ratio of carbon, hydrogen, and oxygen atoms in the compound.
Determining Empirical Formula
To determine the empirical formula of a compound, we need to know the number of atoms of each element present in the compound. This can be done by analyzing the molecular formula of the compound, which is a representation of the actual number of atoms of each element present in the compound.
For example, the molecular formula of glucose is C6H12O6, which means that there are 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms present in the compound. To determine the empirical formula, we need to simplify the molecular formula by dividing the number of atoms of each element by the greatest common divisor (GCD) of the numbers.
In the case of glucose, the GCD of 6, 12, and 6 is 6. Therefore, the empirical formula of glucose is CH2O, which represents the ratio of carbon, hydrogen, and oxygen atoms in the compound.
Which Pair of Compounds Has the Same Empirical Formula?
Now that we have a good understanding of empirical formula, let's use it to determine which pair of compounds has the same empirical formula.
A. CH and C2H2
The molecular formula of CH is CH, which means that there is 1 carbon atom and 1 hydrogen atom present in the compound. The molecular formula of C2H2 is C2H2, which means that there are 2 carbon atoms and 2 hydrogen atoms present in the compound.
To determine the empirical formula of CH, we need to simplify the molecular formula by dividing the number of atoms of each element by the greatest common divisor (GCD) of the numbers. In this case, the GCD of 1 and 1 is 1. Therefore, the empirical formula of CH is CH.
To determine the empirical formula of C2H2, we need to simplify the molecular formula by dividing the number of atoms of each element by the greatest common divisor (GCD) of the numbers. In this case, the GCD of 2 and 2 is 2. Therefore, the empirical formula of C2H2 is CH.
Since the empirical formula of CH is the same as the empirical formula of C2H2, option A is a correct answer.
B. C2H6 and CH
The molecular formula of C2H6 is C2H6, which means that there are 2 carbon atoms and 6 hydrogen atoms present in the compound. The molecular formula of CH is CH, which means that there is 1 carbon atom and 1 hydrogen atom present in the compound.
To determine the empirical formula of C2H6, we need to simplify the molecular formula by dividing the number of atoms of each element by the greatest common divisor (GCD) of the numbers. In this case, the GCD of 2 and 6 is 2. Therefore, the empirical formula of C2H6 is CH3.
To determine the empirical formula of CH, we need to simplify the molecular formula by dividing the number of atoms of each element by the greatest common divisor (GCD) of the numbers. In this case, the GCD of 1 and 1 is 1. Therefore, the empirical formula of CH is CH.
Since the empirical formula of C2H6 is not the same as the empirical formula of CH, option B is not a correct answer.
C. C3H8 and C3H
The molecular formula of C3H8 is C3H8, which means that there are 3 carbon atoms and 8 hydrogen atoms present in the compound. The molecular formula of C3H is C3H, which means that there are 3 carbon atoms and 1 hydrogen atom present in the compound.
To determine the empirical formula of C3H8, we need to simplify the molecular formula by dividing the number of atoms of each element by the greatest common divisor (GCD) of the numbers. In this case, the GCD of 3 and 8 is 1. Therefore, the empirical formula of C3H8 is C3H8.
To determine the empirical formula of C3H, we need to simplify the molecular formula by dividing the number of atoms of each element by the greatest common divisor (GCD) of the numbers. In this case, the GCD of 3 and 1 is 1. Therefore, the empirical formula of C3H is CH.
Since the empirical formula of C3H8 is not the same as the empirical formula of C3H, option C is not a correct answer.
D. C2H2 and C2H
The molecular formula of C2H2 is C2H2, which means that there are 2 carbon atoms and 2 hydrogen atoms present in the compound. The molecular formula of C2H is C2H, which means that there are 2 carbon atoms and 1 hydrogen atom present in the compound.
To determine the empirical formula of C2H2, we need to simplify the molecular formula by dividing the number of atoms of each element by the greatest common divisor (GCD) of the numbers. In this case, the GCD of 2 and 2 is 2. Therefore, the empirical formula of C2H2 is CH.
To determine the empirical formula of C2H, we need to simplify the molecular formula by dividing the number of atoms of each element by the greatest common divisor (GCD) of the numbers. In this case, the GCD of 2 and 1 is 1. Therefore, the empirical formula of C2H is CH.
Since the empirical formula of C2H2 is the same as the empirical formula of C2H, option D is a correct answer.
Conclusion
In conclusion, the pair of compounds that has the same empirical formula is option A (CH and C2H2) and option D (C2H2 and C2H). Both pairs of compounds have the same empirical formula, which is CH.
References
- [1] Empirical Formula. (n.d.). In Wikipedia. Retrieved from https://en.wikipedia.org/wiki/Empirical_formula
- [2] Molecular Formula. (n.d.). In Wikipedia. Retrieved from https://en.wikipedia.org/wiki/Molecular_formula
- [3] Empirical Formula and Molecular Formula. (n.d.). In Chemistry LibreTexts. Retrieved from https://chem.libretexts.org/Bookshelves/General_Chemistry/Map%3A_Chemistry_2e_(OpenStax)/06%3A_Chemical_Formulas_and_Nomenclature/6.04%3A_Empirical_Formula_and_Molecular_Formula
Empirical Formula Q&A =========================
Q: What is the difference between empirical formula and molecular formula?
A: The empirical formula of a compound is a simplified representation of its chemical composition, expressed in the smallest whole-number ratio of atoms of each element present in the compound. The molecular formula of a compound, on the other hand, is a representation of the actual number of atoms of each element present in the compound.
Q: How do I determine the empirical formula of a compound?
A: To determine the empirical formula of a compound, you need to know the number of atoms of each element present in the compound. This can be done by analyzing the molecular formula of the compound, which is a representation of the actual number of atoms of each element present in the compound. You then need to simplify the molecular formula by dividing the number of atoms of each element by the greatest common divisor (GCD) of the numbers.
Q: What is the greatest common divisor (GCD)?
A: The greatest common divisor (GCD) is the largest number that divides two or more numbers without leaving a remainder. In the context of empirical formula, the GCD is used to simplify the molecular formula by dividing the number of atoms of each element by the GCD.
Q: How do I simplify the molecular formula to get the empirical formula?
A: To simplify the molecular formula, you need to divide the number of atoms of each element by the greatest common divisor (GCD) of the numbers. This will give you the empirical formula of the compound.
Q: What is the significance of empirical formula in chemistry?
A: The empirical formula is a fundamental concept in chemistry that helps us understand the composition and properties of compounds. It is used to predict the properties of compounds, such as their melting and boiling points, solubility, and reactivity.
Q: Can a compound have multiple empirical formulas?
A: No, a compound can only have one empirical formula. The empirical formula is a unique representation of the chemical composition of a compound.
Q: How do I determine the molecular formula of a compound?
A: To determine the molecular formula of a compound, you need to know the number of atoms of each element present in the compound. This can be done by analyzing the empirical formula of the compound, which is a simplified representation of its chemical composition.
Q: What is the relationship between empirical formula and molecular formula?
A: The empirical formula is a simplified representation of the molecular formula. The molecular formula is a more detailed representation of the empirical formula, showing the actual number of atoms of each element present in the compound.
Q: Can a compound have the same empirical formula as another compound?
A: Yes, a compound can have the same empirical formula as another compound. This means that the two compounds have the same chemical composition, but may have different molecular formulas.
Q: How do I determine if two compounds have the same empirical formula?
A: To determine if two compounds have the same empirical formula, you need to compare their molecular formulas. If the molecular formulas are the same, then the compounds have the same empirical formula.
Q: What is the significance of comparing empirical formulas?
A: Comparing empirical formulas is important in chemistry because it helps us understand the relationships between compounds and predict their properties. It also helps us to identify compounds that have similar chemical compositions.
Q: Can a compound have a different empirical formula than its molecular formula?
A: Yes, a compound can have a different empirical formula than its molecular formula. This means that the compound has a more complex chemical composition than its empirical formula suggests.
Q: How do I determine the empirical formula of a compound with a different empirical formula than its molecular formula?
A: To determine the empirical formula of a compound with a different empirical formula than its molecular formula, you need to analyze the molecular formula of the compound and simplify it by dividing the number of atoms of each element by the greatest common divisor (GCD) of the numbers.
Q: What is the relationship between empirical formula and chemical properties?
A: The empirical formula is related to the chemical properties of a compound. The empirical formula helps us to predict the properties of a compound, such as its melting and boiling points, solubility, and reactivity.
Q: Can a compound's empirical formula change over time?
A: No, a compound's empirical formula cannot change over time. The empirical formula is a fixed representation of the chemical composition of a compound.
Q: How do I determine the empirical formula of a compound that has undergone a chemical reaction?
A: To determine the empirical formula of a compound that has undergone a chemical reaction, you need to analyze the molecular formula of the product and simplify it by dividing the number of atoms of each element by the greatest common divisor (GCD) of the numbers.
Q: What is the significance of empirical formula in chemical reactions?
A: The empirical formula is important in chemical reactions because it helps us to predict the products of a reaction and understand the relationships between reactants and products.
Q: Can a compound's empirical formula be used to predict its reactivity?
A: Yes, a compound's empirical formula can be used to predict its reactivity. The empirical formula helps us to understand the chemical composition of a compound and predict its reactivity.
Q: How do I determine the empirical formula of a compound that is a mixture of different elements?
A: To determine the empirical formula of a compound that is a mixture of different elements, you need to analyze the molecular formula of the compound and simplify it by dividing the number of atoms of each element by the greatest common divisor (GCD) of the numbers.
Q: What is the relationship between empirical formula and mixture of elements?
A: The empirical formula is related to the mixture of elements in a compound. The empirical formula helps us to understand the chemical composition of a compound and predict its properties.
Q: Can a compound's empirical formula change when it is mixed with other elements?
A: No, a compound's empirical formula cannot change when it is mixed with other elements. The empirical formula is a fixed representation of the chemical composition of a compound.
Q: How do I determine the empirical formula of a compound that has undergone a phase transition?
A: To determine the empirical formula of a compound that has undergone a phase transition, you need to analyze the molecular formula of the product and simplify it by dividing the number of atoms of each element by the greatest common divisor (GCD) of the numbers.
Q: What is the significance of empirical formula in phase transitions?
A: The empirical formula is important in phase transitions because it helps us to predict the products of a phase transition and understand the relationships between reactants and products.
Q: Can a compound's empirical formula be used to predict its phase transition behavior?
A: Yes, a compound's empirical formula can be used to predict its phase transition behavior. The empirical formula helps us to understand the chemical composition of a compound and predict its phase transition behavior.
Q: How do I determine the empirical formula of a compound that is a polymer?
A: To determine the empirical formula of a compound that is a polymer, you need to analyze the molecular formula of the polymer and simplify it by dividing the number of atoms of each element by the greatest common divisor (GCD) of the numbers.
Q: What is the relationship between empirical formula and polymers?
A: The empirical formula is related to the polymers. The empirical formula helps us to understand the chemical composition of a polymer and predict its properties.
Q: Can a compound's empirical formula change when it is polymerized?
A: No, a compound's empirical formula cannot change when it is polymerized. The empirical formula is a fixed representation of the chemical composition of a compound.
Q: How do I determine the empirical formula of a compound that has undergone a chemical reaction involving a catalyst?
A: To determine the empirical formula of a compound that has undergone a chemical reaction involving a catalyst, you need to analyze the molecular formula of the product and simplify it by dividing the number of atoms of each element by the greatest common divisor (GCD) of the numbers.
Q: What is the significance of empirical formula in chemical reactions involving catalysts?
A: The empirical formula is important in chemical reactions involving catalysts because it helps us to predict the products of a reaction and understand the relationships between reactants and products.
Q: Can a compound's empirical formula be used to predict its reactivity in a chemical reaction involving a catalyst?
A: Yes, a compound's empirical formula can be used to predict its reactivity in a chemical reaction involving a catalyst. The empirical formula helps us to understand the chemical composition of a compound and predict its reactivity.
Q: How do I determine the empirical formula of a compound that is a mixture of different isotopes?
A: To determine the empirical formula of a compound that is a mixture of different isotopes, you need to analyze the molecular formula of the compound and simplify it by dividing the number of atoms of each element by the greatest common divisor (GCD) of the numbers.
Q: What is the relationship between empirical formula and isotopes?
A: The empirical formula is related to the isotopes. The empirical formula helps us to understand the chemical composition of a compound and predict its properties.
Q: Can a compound's empirical formula change when it is mixed with different isotopes?
A: No, a compound