Give examples for decompositon reaction
Answers
Answer:
- CaCo3 ----------> cao+ co2
- 2AgCl-----------> 2Ag + Cl2
- 2Nacl------------> 2Na + Cl2
Explanation:
- when we heat calcium carbonate then decomposes and forms calcium oxide and releases carbon dioxide. this is also known as thermal decompostion reaction because it is carried out by heat.
- when silver chloride is left in contact with any kind of light then it decomposes then it forms silver and chlorine gas. That's why it is advised to keep silver chloride in dark room to prevent it from decompostion. this is also known as photochemical decompostion reaction because it is carried out by light.
- when we pass electric current through solution of sodium chloride then it decomposes and forms sodium and chlorine gas. this is also known as Electrolytic decomposition reaction.
Answer:
A decomposition reaction occurs when one reactant breaks down into two or more products.
➪Decomposition reactions can be classified into three types:
1.Thermal decomposition reaction
2.Electrolytic decomposition reaction
3.Photo decomposition reaction
Two examples of decomposition reactions are described below.
1.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
2.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:
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