Account for the following: (i) Antacid tablets are used by a person suffering from acidity


#1

Account for the following:
(i) Antacid tablets are used by a person suffering from acidity.
(ii) Toothpaste is used for cleaning teeth.
(iii) Which acid is used as food preservative?


#2

(i) Antacid tablets generally consist of magnesium hydroxide and aluminium hydroxide which are mild bases. They react chemically with the excess hydrochloric acid produced in stomach and neutralise its effect.
(ii) The toothpastes contain some basic ingredients and they help in neutralising the effect of the acid and also in increasing the pH of the mouth.These toothpastes help in checking corrosion of enamel and decay of teeth.
(iii) Benzoic acid (C6H5COOH).