Question

The bones kept in the dilute hydrochloric acid becomes soft.Give reason

Answer 1

Answer:

Bones are made up of many minerals such as calcium,potassium,magnesium etc. Primarily the bones are made of calcium. HCl is a very strong acid.When the bones are kept in dilute hydrochloric acid, they become soft because the calcium present in the bones dissolves in HCl. A chemical reaction happens between calcium and dilute HCl which is as follows-

HCl + Ca ------> CaCl2 + H2