Question

Explain any 4 changes that you observe during Decomposition reaction ?

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Answer 1

A decomposition reaction occurs when one reactant breaks down into two or more products. It can be represented by the general equation:

AB → A + B

In this equation, AB represents the reactant that begins the reaction, and A and B represent the products of the reaction. The arrow shows the direction in which the reaction occurs.

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

The decomposition of water using electricity

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Answer 2

$\huge \sf \red{Answer-: }$

$\sf \green{The \: 4 \: changes \: that \: we \: observe \: during \: Decomposition \: reaction : }$

$\sf \pink{❥Manufacture \: of \: cement \: or \: calcium \: oxide}$

$\sf \blue{❥For \: metallurgical \: processes: Extraction \: of \: metals \: from \: their \: oxides}$

$\sf \gray{❥The \: relief \: from \: acid \: indigestion.}$

$\sf \orange{❥Thermite \: welding.}$