Select The Correct Answer.What Reaction Type Is Depicted By The Following Equation?$\[2 C_2H_2 + 5 O_2 \rightarrow 4 CO_2 + 2 H_2O\\]A. Decomposition B. Combination C. Combustion D. Single-replacement E. Double-replacement

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Chemical reactions are a fundamental concept in chemistry, and understanding the different types of reactions is crucial for analyzing and predicting the outcomes of various chemical processes. In this article, we will delve into the world of chemical reactions and explore the different types, with a focus on identifying the correct reaction type depicted by a given equation.

What is a Chemical Reaction?

A chemical reaction is a process in which one or more substances, known as reactants, are converted into new substances, known as products. Chemical reactions involve the breaking and forming of chemical bonds between atoms, resulting in the transformation of the reactants into products.

Types of Chemical Reactions

There are several types of chemical reactions, including:

  • Combination Reaction: A combination reaction is a type of reaction in which two or more substances combine to form a new compound. This type of reaction is often represented by the equation: A + B → AB.
  • Decomposition Reaction: A decomposition reaction is a type of reaction in which a single compound breaks down into two or more simpler substances. This type of reaction is often represented by the equation: AB → A + B.
  • Combustion Reaction: A combustion reaction is a type of reaction in which a substance reacts with oxygen to produce heat and light. This type of reaction is often represented by the equation: Fuel + O2 → CO2 + H2O.
  • Single-Replacement Reaction: A single-replacement reaction is a type of reaction in which one element replaces another element in a compound. This type of reaction is often represented by the equation: A + BC → AC + B.
  • Double-Replacement Reaction: A double-replacement reaction is a type of reaction in which two compounds exchange partners to form two new compounds. This type of reaction is often represented by the equation: AB + CD → AD + CB.

Analyzing the Given Equation

The given equation is:

2C2H2+5O2→4CO2+2H2O{2 C_2H_2 + 5 O_2 \rightarrow 4 CO_2 + 2 H_2O}

To determine the type of reaction depicted by this equation, we need to analyze the reactants and products.

Reactants

The reactants in this equation are:

  • C2H2: Acetylene, a hydrocarbon gas.
  • O2: Oxygen gas.

Products

The products in this equation are:

  • CO2: Carbon dioxide gas.
  • H2O: Water vapor.

Identifying the Correct Reaction Type

Based on the reactants and products, we can identify the correct reaction type as follows:

  • The reactants are a hydrocarbon gas (C2H2) and oxygen gas (O2).
  • The products are carbon dioxide gas (CO2) and water vapor (H2O).
  • The reaction involves the breaking of chemical bonds between the reactants and the formation of new chemical bonds between the products.

Conclusion

Based on the analysis of the reactants and products, we can conclude that the given equation depicts a Combustion Reaction. This type of reaction involves the reaction of a substance with oxygen to produce heat and light, resulting in the formation of carbon dioxide and water vapor.

Key Takeaways

  • Chemical reactions involve the breaking and forming of chemical bonds between atoms.
  • There are several types of chemical reactions, including combination, decomposition, combustion, single-replacement, and double-replacement reactions.
  • To identify the correct reaction type, we need to analyze the reactants and products of the equation.
  • Combustion reactions involve the reaction of a substance with oxygen to produce heat and light, resulting in the formation of carbon dioxide and water vapor.

Practice Problems

  1. What is the type of reaction depicted by the equation: 2 H2 + O2 → 2 H2O?
  2. What is the type of reaction depicted by the equation: Ca + O2 → CaO?
  3. What is the type of reaction depicted by the equation: 2 Na + Cl2 → 2 NaCl?

Answer Key

  1. Combination Reaction
  2. Combination Reaction
  3. Single-Replacement Reaction
    Chemical Reactions Q&A =========================

In this article, we will address some of the most frequently asked questions about chemical reactions, including the different types of reactions, how to identify the correct reaction type, and more.

Q: What is a chemical reaction?

A: A chemical reaction is a process in which one or more substances, known as reactants, are converted into new substances, known as products. Chemical reactions involve the breaking and forming of chemical bonds between atoms, resulting in the transformation of the reactants into products.

Q: What are the different types of chemical reactions?

A: There are several types of chemical reactions, including:

  • Combination Reaction: A combination reaction is a type of reaction in which two or more substances combine to form a new compound. This type of reaction is often represented by the equation: A + B → AB.
  • Decomposition Reaction: A decomposition reaction is a type of reaction in which a single compound breaks down into two or more simpler substances. This type of reaction is often represented by the equation: AB → A + B.
  • Combustion Reaction: A combustion reaction is a type of reaction in which a substance reacts with oxygen to produce heat and light. This type of reaction is often represented by the equation: Fuel + O2 → CO2 + H2O.
  • Single-Replacement Reaction: A single-replacement reaction is a type of reaction in which one element replaces another element in a compound. This type of reaction is often represented by the equation: A + BC → AC + B.
  • Double-Replacement Reaction: A double-replacement reaction is a type of reaction in which two compounds exchange partners to form two new compounds. This type of reaction is often represented by the equation: AB + CD → AD + CB.

Q: How do I identify the correct reaction type?

A: To identify the correct reaction type, you need to analyze the reactants and products of the equation. Here are some tips to help you:

  • Look for the reactants: Identify the substances that are being combined or broken down.
  • Look for the products: Identify the substances that are being formed.
  • Check for oxygen: If oxygen is present, it may indicate a combustion reaction.
  • Check for the formation of water: If water is formed, it may indicate a combustion reaction.
  • Check for the formation of a new compound: If a new compound is formed, it may indicate a combination reaction.

Q: What is the difference between a combination reaction and a decomposition reaction?

A: A combination reaction is a type of reaction in which two or more substances combine to form a new compound. A decomposition reaction is a type of reaction in which a single compound breaks down into two or more simpler substances.

Q: What is the difference between a single-replacement reaction and a double-replacement reaction?

A: A single-replacement reaction is a type of reaction in which one element replaces another element in a compound. A double-replacement reaction is a type of reaction in which two compounds exchange partners to form two new compounds.

Q: Can you give me some examples of chemical reactions?

A: Here are some examples of chemical reactions:

  • Combination Reaction: 2 H2 + O2 → 2 H2O
  • Decomposition Reaction: 2 H2O → 2 H2 + O2
  • Combustion Reaction: Fuel + O2 → CO2 + H2O
  • Single-Replacement Reaction: Zn + CuSO4 → ZnSO4 + Cu
  • Double-Replacement Reaction: NaCl + AgNO3 → NaNO3 + AgCl

Q: How do I write a balanced chemical equation?

A: To write a balanced chemical equation, you need to ensure that the number of atoms of each element is the same on both the reactant and product sides. Here are some tips to help you:

  • Count the atoms: Count the number of atoms of each element on both the reactant and product sides.
  • Add coefficients: Add coefficients to the reactants and products to ensure that the number of atoms of each element is the same on both sides.
  • Check the equation: Check the equation to ensure that it is balanced.

Conclusion

Chemical reactions are a fundamental concept in chemistry, and understanding the different types of reactions is crucial for analyzing and predicting the outcomes of various chemical processes. By following the tips and examples provided in this article, you can identify the correct reaction type and write a balanced chemical equation.