How Many Grams Of NaOH Will React With $507 \, \text{g} \, \text{FeCl}_2$ In This Reaction?$\text{FeCl}_2 + 2 \, \text{NaOH} \rightarrow \text{Fe(OH)}_2(s) + 2 \, \text{NaCl}$A. 444.25 G NaOH B. 160 G NaOH C. 320 G NaOH D. 1014 G

How Many Grams of NaOH Will React with FeCl2 in This Reaction?

Understanding the Chemical Reaction

The given chemical reaction is: $\text{FeCl}_2 + 2 \, \text{NaOH} \rightarrow \text{Fe(OH)}_2(s) + 2 \, \text{NaCl}$

In this reaction, iron(II) chloride (FeCl2) reacts with sodium hydroxide (NaOH) to form iron(II) hydroxide (Fe(OH)2) and sodium chloride (NaCl). The reaction is a single displacement reaction where FeCl2 displaces Na+ from NaOH.

Calculating the Number of Moles of FeCl2

To determine the number of grams of NaOH that will react with FeCl2, we first need to calculate the number of moles of FeCl2. The molar mass of FeCl2 is 126.75 g/mol.

Given: $507 \, \text{g} \, \text{FeCl}_2$

To find the number of moles of FeCl2, we divide the given mass by the molar mass:

$$\text{moles of FeCl}_2 = \frac{507 \, \text{g}}{126.75 \, \text{g/mol}} = 4 \, \text{mol}$$

Determining the Number of Moles of NaOH Required

According to the balanced chemical equation, 2 moles of NaOH are required to react with 1 mole of FeCl2. Therefore, the number of moles of NaOH required is twice the number of moles of FeCl2:

$$\text{moles of NaOH} = 2 \times 4 \, \text{mol} = 8 \, \text{mol}$$

Calculating the Mass of NaOH Required

The molar mass of NaOH is 40 g/mol. To find the mass of NaOH required, we multiply the number of moles by the molar mass:

$$\text{mass of NaOH} = 8 \, \text{mol} \times 40 \, \text{g/mol} = 320 \, \text{g}$$

Conclusion

Therefore, the number of grams of NaOH that will react with 507 g of FeCl2 in this reaction is 320 g.

Answer

The correct answer is C. 320 g NaOH.

Additional Information

In this reaction, the mass of FeCl2 is given, and we need to find the mass of NaOH required. We can also calculate the mass of FeCl2 required to react with a given mass of NaOH. If we know the mass of NaOH, we can calculate the mass of FeCl2 required using the same method.

Chemical Reactions and Stoichiometry

Chemical reactions involve the interaction of atoms, molecules, or ions to form new substances. Stoichiometry is the study of the quantitative relationships between reactants and products in chemical reactions. It is essential to understand stoichiometry to predict the amounts of reactants and products in a chemical reaction.

Balanced Chemical Equations

A balanced chemical equation is a chemical equation in which the number of atoms of each element is the same on both the reactant and product sides. The coefficients in a balanced chemical equation represent the number of moles of each substance involved in the reaction.

Moles and Molar Mass

The mole is the unit of measurement for the amount of substance. The molar mass of a substance is the mass of one mole of that substance. The molar mass of a substance can be calculated by summing the atomic masses of its constituent atoms.

Chemical Reactions and Stoichiometry Calculations

Chemical reactions and stoichiometry calculations involve the use of moles, molar mass, and balanced chemical equations to predict the amounts of reactants and products in a chemical reaction. These calculations are essential in chemistry and are used in a wide range of applications, including chemical synthesis, chemical analysis, and chemical engineering.

Conclusion

In conclusion, the number of grams of NaOH that will react with 507 g of FeCl2 in this reaction is 320 g. This calculation involves the use of moles, molar mass, and balanced chemical equations to predict the amounts of reactants and products in a chemical reaction.
Q&A: Chemical Reactions and Stoichiometry

Understanding Chemical Reactions and Stoichiometry

Chemical reactions and stoichiometry are fundamental concepts in chemistry that help us predict the amounts of reactants and products in a chemical reaction. In this article, we will answer some frequently asked questions about chemical reactions and stoichiometry.

Q: What is a chemical reaction?

A: A chemical reaction is a process in which one or more substances (reactants) are converted into new substances (products). Chemical reactions involve the interaction of atoms, molecules, or ions to form new substances.

Q: What is stoichiometry?

A: Stoichiometry is the study of the quantitative relationships between reactants and products in chemical reactions. It is essential to understand stoichiometry to predict the amounts of reactants and products in a chemical reaction.

Q: What is a balanced chemical equation?

A: A balanced chemical equation is a chemical equation in which the number of atoms of each element is the same on both the reactant and product sides. The coefficients in a balanced chemical equation represent the number of moles of each substance involved in the reaction.

Q: How do I calculate the number of moles of a substance?

A: To calculate the number of moles of a substance, you need to know its molar mass and its mass. The number of moles of a substance can be calculated using the following formula:

moles = mass / molar mass

Q: How do I calculate the mass of a substance?

A: To calculate the mass of a substance, you need to know its molar mass and the number of moles. The mass of a substance can be calculated using the following formula:

mass = moles x molar mass

Q: What is the difference between a mole and a gram?

A: A mole is a unit of measurement for the amount of substance, while a gram is a unit of measurement for mass. One mole of a substance has a mass equal to its molar mass.

Q: How do I determine the limiting reactant in a chemical reaction?

A: To determine the limiting reactant in a chemical reaction, you need to compare the mole ratio of the reactants to the mole ratio of the products. The reactant with the smallest mole ratio is the limiting reactant.

Q: What is the purpose of stoichiometry in chemistry?

A: Stoichiometry is essential in chemistry because it helps us predict the amounts of reactants and products in a chemical reaction. This information is crucial in a wide range of applications, including chemical synthesis, chemical analysis, and chemical engineering.

Q: Can you give an example of a chemical reaction and stoichiometry calculation?

A: Yes, let's consider the following chemical reaction:

2 Na + Cl2 → 2 NaCl

If we have 2 moles of Na and 1 mole of Cl2, how many moles of NaCl will be produced?

To solve this problem, we need to use the balanced chemical equation and the mole ratio of the reactants to the products. The balanced chemical equation shows that 2 moles of Na react with 1 mole of Cl2 to produce 2 moles of NaCl. Therefore, if we have 2 moles of Na and 1 mole of Cl2, we will produce 2 moles of NaCl.

Conclusion

In conclusion, chemical reactions and stoichiometry are fundamental concepts in chemistry that help us predict the amounts of reactants and products in a chemical reaction. By understanding these concepts, we can solve a wide range of problems in chemistry and apply them to real-world applications.

Frequently Asked Questions

• What is a chemical reaction?
• What is stoichiometry?
• What is a balanced chemical equation?
• How do I calculate the number of moles of a substance?
• How do I calculate the mass of a substance?
• What is the difference between a mole and a gram?
• How do I determine the limiting reactant in a chemical reaction?
• What is the purpose of stoichiometry in chemistry?
• Can you give an example of a chemical reaction and stoichiometry calculation?

Additional Resources

• Chemistry textbooks and online resources
• Stoichiometry calculators and online tools
• Chemistry experiments and demonstrations
• Chemistry lectures and tutorials

Conclusion

In conclusion, chemical reactions and stoichiometry are essential concepts in chemistry that help us predict the amounts of reactants and products in a chemical reaction. By understanding these concepts, we can solve a wide range of problems in chemistry and apply them to real-world applications.