(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 hydrogencarbonate to evolve brisk effervescence of carbon dioxide gas.
CH3COOH + NaHCO3 → CH3COONa + CO2 + H2O
(b) Carbon and its compounds used as fuels because they burn in air releasing a lot of heat energy.
(c) Detergent is better for washing clothes with water. They are better cleansing agents than soaps because they do not form insoluble calcium and magnesium salts with hard water, and hence can be used for washing even with hard water.