A gaseous element 'X' is used in the manufacture of bleaching powder. On reaction withhydrogen, 'X' forms a substance 'Y' which after dissolution in water is usedto clean metal surfaces. Identify X and Y. Justify.

A gaseous element 'X' is used in the manufacture of bleaching powder.

1.	A gaseous element 'X' is used in the manufacture of bleaching powder. On reaction withhydrogen, 'X' forms a substance 'Y' which after dissolution in water is usedto clean metal surfaces. Identify X and Y. Justify.
Answer» Solution :The element cholrine is USED in the MANUFACTURE of bleaching power. It reacts with hydrogen to form hydrogen CHLORIDE which dissolves in WATER to gives hydrochloric acid . It is is used to clean the METAL surfaces. So 'X' is chlorine and 'Y' is hydrochloride which on dissolution in water gives hydrochloricacid. Metal surfaces have coating of metal oxides andhydrochloric acid can react with the metal oxides and removes the coating.