(a) How does ethanoic acid react with sodium hydrogen carbonate? Give the 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 the reason for your answer.
(a) How does ethanoic acid react with sodium hydrogen carbonate? Give the 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 the reason for your answer.
(a) Ethanoic acid reacts with sodium hydrogen carbonate to produce a brisk effervescence of carbon dioxide gas. The salt formed in this reaction is sodium ethanoate.
The chemical equation of the above reaction is:
CH3−COOH+NaHCO3⟶CH3−COONa+CO2+H2O
(b) Carbon and its compounds are used as fuels for numerous applications, as they release a lot of heat energy when burned in air.
(c) Detergent is better for washing clothes in hard water because it does not form insoluble magnesium or calcium salts (scum) on combining with the calcium or magnesium ions present in the hard water. Soap, on the other hand, reacts with these calcium and magnesium ions present in the hard water to form insoluble calcium and magnesium salts of fatty acids. Therefore, soaps don't lather easily in hard water, while detergents do.
(a) Ethanoic acid reacts with sodium hydrogen carbonate to produce a brisk effervescence of carbon dioxide gas. The salt formed in this reaction is sodium ethanoate.
The chemical equation of the above reaction is:
CH3−COOH+NaHCO3⟶CH3−COONa+CO2+H2O
(b) Carbon and its compounds are used as fuels for numerous applications, as they release a lot of heat energy when burned in air.
(c) Detergent is better for washing clothes in hard water because it does not form insoluble magnesium or calcium salts (scum) on combining with the calcium or magnesium ions present in the hard water. Soap, on the other hand, reacts with these calcium and magnesium ions present in the hard water to form insoluble calcium and magnesium salts of fatty acids. Therefore, soaps don't lather easily in hard water, while detergents do.
