question_answer

HF is not stored in glass bottles but is kept in wax bottles. Assign reason.

Answer:

                HF attacks sodium silicate which is the main constituent of glass. As a result, the glass bottles are slowly corroded or eaten up. Therefore, HF cannot be stored in glass bottles. It is normally kept in wax bottles. \[N{{a}_{2}}Si{{O}_{3}}+6HF\,\xrightarrow{{}}\,N{{a}_{2}}Si{{F}_{6}}+3{{H}_{2}}O\]