Question

state the kind of chemical reactions in the following example combustion of caol in air (c) jeating of limestone​

Answer 1

Answer:

During combustion the coal burns in air to form CO2,H2O along with the evolution of heat. Thus, it is a type of exothermic decomposition reaction. ... When limestone is heated strongly, it breaks into CO2 and lime. Thus, it is a type of thermal decompositin reaction

Explanation:

Answer 2

Answer:

Combustion of coal in air is a Combination reaction and also an Oxidation reaction.

Heating of limestone is a Decomposition reaction.

Explanation:

1.Combustion of coal in air :

C + O2 - - > C02

Here two reactants combine to give a single product. So it is a Combination reaction.

Besides, the carbon atom gains oxygen, so it is an Oxidation reaction.

2. Heating of Calcium carbonate (ie. Limestone)

CaCo3 + heat - - > CaO + CO2

Here two products are formed from a single reactant.

So it is a Decomposition reaction.