Problem 13 Classify the reaction: $$ 2 ... [FREE SOLUTION]

Chapter 23: Problem 13

Classify the reaction: $$ 2 \mathrm{H}_{2}(g)+\mathrm{O}_{2}(g) \rightarrow 2 \mathrm{H}_{2} \mathrm{O}(g) $$ A) combustion B) decomposition C) single displacement D) synthesis

Short Answer

Expert verified

The reaction is a synthesis.

Step by step solution

Identify The Reaction Type

We need to determine the type of chemical reaction that is occurring in the given equation $ 2 \mathrm{H}_{2}(g) + \mathrm{O}_{2}(g) \rightarrow 2 \mathrm{H}_{2} \mathrm{O}(g) $. The reaction involves two reactants combining to form one product. This suggests a potential synthesis or combination reaction.

Verify The Reaction Characteristics

In a synthesis reaction (also known as a combination reaction), two or more simple substances combine to form a more complex substance. In the given equation, hydrogen gas $ (\mathrm{H}_{2}) $ and oxygen gas $ (\mathrm{O}_{2}) $ react to form water $ (\mathrm{H}_{2}\mathrm{O}) $. This is consistent with the characteristics of a synthesis reaction.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Synthesis Reaction

A synthesis reaction, also known as a combination reaction, is a common type of chemical reaction where two or more reactants combine to form a single, more complex product. These reactions are fundamental in both natural and industrial processes. In the equation $ 2 \mathrm{H}_{2}(g) + \mathrm{O}_{2}(g) \rightarrow 2 \mathrm{H}_{2}\mathrm{O}(g) $, hydrogen and oxygen gases combine to produce water, showcasing a classic example of synthesis.

Key characteristics of synthesis reactions include:

Multiple reactants forming a single product.
The product is often more complex than the reactants.
These reactions can be exothermic, releasing energy.

Remembering these features can help in identifying synthesis reactions from a list of chemical reactions.

Types of Chemical Reactions

Understanding the different types of chemical reactions is crucial for studying chemistry. These types provide a framework for understanding how substances interact with each other.

Main types of chemical reactions include:

Synthesis Reaction: Multiple reactants form a single product.
Decomposition Reaction: A single compound breaks down into two or more simpler substances.
Single Displacement Reaction: An element in a compound is replaced by another element.
Double Displacement Reaction: Ions in two compounds exchange places to form two new compounds.
Combustion Reaction: An organic substance reacts with oxygen, often producing heat and light.

Each type has unique characteristics and plays specific roles in different processes.

Combustion Reaction

Combustion reactions are a vital type of chemical reaction, occurring when a substance reacts with oxygen to produce energy, usually in the form of heat and light. These reactions are often involved in burning fuels for energy.

Key aspects of combustion reactions:

They involve oxygen as a reactant.
Typically release energy, making them exothermic.
Common products include carbon dioxide and water, particularly with hydrocarbon combustion.

An example of a combustion reaction is:\[ \mathrm{CH}_{4}(g) + 2 \mathrm{O}_{2}(g) \rightarrow \mathrm{CO}_{2}(g) + 2 \mathrm{H}_{2}\mathrm{O}(g) \]These reactions are central to energy production and consumption in many industries.

Decomposition Reaction

Decomposition reactions are the opposite of synthesis reactions. In a decomposition reaction, a single compound breaks down into two or more simpler substances. These reactions are essential in processes like the breakdown of food in our bodies.

Characteristics of decomposition reactions include:

A single reactant produces multiple products.
Can be endothermic, requiring energy to proceed.
Often initiated by heat, light, or electricity.

An example is the decomposition of water:\[ 2 \mathrm{H}_{2}\mathrm{O}(l) \rightarrow 2 \mathrm{H}_{2}(g) + \mathrm{O}_{2}(g) \]These reactions play significant roles in chemical and biological systems, facilitating the conversion of complex molecules into simpler forms.

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91影视

Classify the reaction: $$ 2 \mathrm{H}_{2}(g)+\mathrm{O}_{2}(g) \rightarrow 2 \mathrm{H}_{2} \mathrm{O}(g) $$ A) combustion B) decomposition C) single displacement D) synthesis

Short Answer

Step by step solution

Identify The Reaction Type

Verify The Reaction Characteristics

Key Concepts

Synthesis Reaction

Types of Chemical Reactions

Combustion Reaction

Decomposition Reaction

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