Answered

IDNLearn.com provides a collaborative environment for finding and sharing answers. Our platform is designed to provide trustworthy and thorough answers to any questions you may have.

11. Which equation represents a combustion reaction?

A. [tex]\[ Ca + 2 HCl \longrightarrow CaCl_2 + H_2 \][/tex]

B. [tex]\[ 2 C_2H_6 + 7 O_2 \longrightarrow 4 CO_2 + 6 H_2O \][/tex]

Sagot :

GinnyAnsweridn
To determine which of the given equations represents a combustion reaction, we need to understand the defining characteristics of a combustion reaction. A combustion reaction typically involves a hydrocarbon reacting with oxygen to produce carbon dioxide and water. Let's examine each equation in detail.

### Reaction 1:
[tex]\[Ca + 2 HCl \longrightarrow CaCl_2 + H_2\][/tex]

In this reaction, calcium (Ca) reacts with hydrochloric acid (HCl) to form calcium chloride (CaCl_2) and hydrogen gas (H_2). This type of reaction is generally referred to as a single displacement reaction, not a combustion reaction.

### Reaction 2:
[tex]\[2 C_2H_6 + 7 O_2 \longrightarrow 4 CO_2 + 6 H_2O\][/tex]

In this equation, ethane (C_2H_6) reacts with oxygen (O_2) to produce carbon dioxide (CO_2) and water (H_2O). This reaction involves a hydrocarbon (ethane) reacting with oxygen and producing carbon dioxide and water, which fits the criteria for a combustion reaction.

Since a combustion reaction involves a hydrocarbon reacting with oxygen to produce carbon dioxide and water, the second equation represents a combustion reaction.

Therefore, the equation that represents a combustion reaction is:
[tex]\[2 C_2H_6 + 7 O_2 \longrightarrow 4 CO_2 + 6 H_2O\][/tex]

The correct answer is:
[tex]\[2\][/tex]
Your participation is crucial to us. Keep sharing your knowledge and experiences. Let's create a learning environment that is both enjoyable and beneficial. IDNLearn.com is dedicated to providing accurate answers. Thank you for visiting, and see you next time for more solutions.