Question

Q1: Identify the decomposition reaction from the following:

a. 4Na+O2∆→Na2O

b. 2()∆→2()+ 2()

c. 2()+2()→2()+2()

Answer 1

Answer:

What type of reactions are represented by the following equations?

1. CaCO  

3

​

→CaO+CO  

2

​

 

2. CaO+H  

2

​

O→Ca(OH)  

2

​

 

3. 2FeSO  

4

​

→Fe  

2

​

O  

3

​

+SO  

2

​

+SO  

3

​

 

4. NH  

4

​

Cl→NH  

3

​

+HCl

5. 2Ca+O  

2

​

→2CaO

Medium

Solution

verified  

1. Decomposition reaction since two kinds of products are formed from one kind of reactant.  

2. Combination reaction since two kind of reactants combined to give one kind of product.

3. Decomposition reaction since three kinds of products are formed from one kind of reactant.  

4. Decomposition reaction since two kinds of products are formed from one kind of reactant.  

5.Combination reaction since two kind of reactants combined to give one kind of product.

Explanation: