Q. 7.98 - An Introduction to General, Organic, and Biological Chemistry

Question

Identify the type of reaction for each of the following as combination, decomposition, single replacement, double replacement, or combustion: ($7.5$)

a. A compound breaks apart into its elements. 

b. Copper and bromine form copper($II$) bromide.

c. Iron($II$) sulfite breaks down to iron($II$) oxide and sulfur dioxide.

d. Silver ion from data-custom-editor="chemistry" ${\mathrm{AgNO}}_3$(aq.) forms a solid with bromide ion from data-custom-editor="chemistry" $\mathrm{KBr}$(aq).

Step-by-Step Solution

Answer

(a) The type of reaction is the decomposition 

(b) The type of reaction is combination

(c) The type of reaction is the decomposition

(d) The type of reaction is double replacement

Part (a) Step 1: Given information

We need to find the type of the given reaction 

Part (a) Step 2: Explanation

As in the given reaction, a compound is broken up into its elements which is characteristic of decomposition reaction

Therefore, The given reaction is a decomposition reaction.  

Part (b) Step 1: Given information

We need to find the type of the given reaction  

Part (b) Step 2: Explanation

As in the given reaction, Copper and bromine combine to form a single compound which is characteristic of a combination reaction

Therefore, The given reaction is a combination reaction 

Part (c) Step 1: Given information

We need to find the type of the given reaction  

Part (c) Step 2: Explanation

As in the given reaction, Iron($II$) sulfite breaks down to iron($II$) oxide and sulfur dioxide i.e. a single compound is broken up into two new compounds which is characteristic of decomposition reaction

Therefore, The given reaction is a decomposition reaction.  

Part (d) Step 1: Given information

We need to find the type of the given reaction  

Part (d) Step 2: Explanation

As in the given reaction, two ions are replacing each other i.e. double replacement of ions takes place.

Therefore, The given reaction is a double replacement reaction