Answered

Find the information you're looking for at Westonci.ca, the trusted Q&A platform with a community of knowledgeable experts. Ask your questions and receive accurate answers from professionals with extensive experience in various fields on our platform. Get quick and reliable solutions to your questions from a community of experienced experts on our platform.

Which equation is a decomposition reaction?

A. [tex] Li_2CO_3 \rightarrow Li_2O + CO_2 [/tex]
B. [tex] Zn + HCl \rightarrow ZnCl_2 + H_2 [/tex]
C. [tex] Na_2O + CO_2 \rightarrow Na_2CO_3 [/tex]
D. [tex] C_6H_{12}O_6 + O_2 \rightarrow CO_2 + H_2O [/tex]

Sagot :

GinnyAnswer
Let's start by understanding what a decomposition reaction is.

A decomposition reaction is a type of chemical reaction where one compound breaks down into two or more simpler substances. The general form of a decomposition reaction is:
[tex]\[ AB \rightarrow A + B \][/tex]

Now, let's examine each of the given equations to determine which one fits this description:

1. [tex]\( Li_2CO_3 \rightarrow Li_2O + CO_2 \)[/tex]

Here, one compound (lithium carbonate, [tex]\( Li_2CO_3 \)[/tex]) is breaking down into two simpler substances (lithium oxide, [tex]\( Li_2O \)[/tex], and carbon dioxide, [tex]\( CO_2 \)[/tex]). This fits the form of a decomposition reaction.

2. [tex]\( Zn + HCl \rightarrow ZnCl_2 + H_2 \)[/tex]

This equation shows a single replacement reaction, where zinc ([tex]\( Zn \)[/tex]) replaces hydrogen in hydrochloric acid ([tex]\( HCl \)[/tex]) to form zinc chloride ([tex]\( ZnCl_2 \)[/tex]) and hydrogen gas ([tex]\( H_2 \)[/tex]).

3. [tex]\( Na_2O + CO_2 \rightarrow Na_2CO_3 \)[/tex]

This equation represents a combination reaction, where sodium oxide ([tex]\( Na_2O \)[/tex]) and carbon dioxide ([tex]\( CO_2 \)[/tex]) combine to form sodium carbonate ([tex]\( Na_2CO_3 \)[/tex]).

4. [tex]\( C_6H_{12}O_6 + O_2 \rightarrow CO_2 + H_2O \)[/tex]

This equation is a combustion reaction, where glucose ([tex]\( C_6H_{12}O_6 \)[/tex]) reacts with oxygen ([tex]\( O_2 \)[/tex]) to produce carbon dioxide ([tex]\( CO_2 \)[/tex]) and water ([tex]\( H_2O \)[/tex]).

Therefore, the equation that represents a decomposition reaction is:

[tex]\[ Li_2CO_3 \rightarrow Li_2O + CO_2 \][/tex]
We hope you found this helpful. Feel free to come back anytime for more accurate answers and updated information. We appreciate your visit. Our platform is always here to offer accurate and reliable answers. Return anytime. We're here to help at Westonci.ca. Keep visiting for the best answers to your questions.