Question

5 EXAMPLE OF PHOTOLYTIC DECOMPOSITION

Answer 1

Answer:

Two more examples of decomposition reactions are described below.

Carbonic acid (H2CO3) is an ingredient in soft drinks. A decomposition reaction takes place when carbonic acid breaks down to produce water (H2O) and carbon dioxide (CO2). This occurs when you open a can of soft drink and some of the carbon dioxide fizzes out. The equation for this reaction is:

H2CO3 → H2O + CO2

Another decomposition reaction occurs when water (H2O) breaks down to produce hydrogen (H2) and oxygen (O2) gases (see Figure below). This happens when an electric current passes through the water, as illustrated below. The equation for this reaction is:

2 H2O → 2 H2 + O2

Answer 2

Explanation:

Decomposition reaction : It is a type of reaction in which a larger molecule decomposes into two or more smaller molecule. It always require energy for breaking of bonds and hence is always endothermic.

Photolytic decomposition require energy in the form of sunlight .

Examples of Photolytic decomposition:

$2AgCl\rightarrow 2Ag+Cl_2$  

$2AgBr(s)\rightarrow 2Ag(s)+Br_2(g)$

$O_3\rightarrow O_2+O$

$NO_2\rightarrow NO+O$

$CH_4\rightarrow CH_3+H$

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