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(a) How does ethanoic acid react with sodium hydrogen carbonate? Give equation of the reaction which takes place.
(b) Why are carbon and its compounds used as fuels for most applications?
(c) Which of the two is better for washing clothes when the water is hard: soap or detergent? Give reason for your answer.
(a) Ethanoic acid reacts with sodium hydrogen carbonate to produce a brisk effervescence of carbon dioxide gas. The salt formed is sodium ethanoate.
The chemical equation of the reaction is given below:
$CH_3COOH + NaHCO_3 → CH_3COONa + CO_2+ H_2O$
(b) Carbon and its compounds are used as fuels for numerous applications because they release a lot of heat energy when burned in air.
(c) Detergent is better for washing clothes in hard water because-
- Detergents do not form insoluble magnesium or calcium salts (scum) on combining with the calcium or magnesium ions present in the hard water.
- Moreover, soaps don't lather easily in hard water but detergents do.
Updated on: 13-Mar-2023
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