(a) How does ethanoic acid react with sodium hydrogencarbonate? Give equation of the reaction which takes place.

38 What is a detergent? Name one detergent. 38 Why have detergents replaced soap as a washing agent ? 39 Why are carbon and its compounds used as fuels for most applications? 39 Which of the two is better for washing clothes when the water is hard: soap or detergent? Give reason for your answer.