1.

Aqueous solution of which of the following acids cannot be kept in a bottle of glass

Answer»

HF
HCl
HBr
Hl

Solution :HF is NORMALLY stored in METAL apparatus because HF attacks glass with the formation of fluorosilicates ions.
`SiO_(2) +6HF to [SiF_(6)]^(2-)+ 2H^(+) +2H_(2)O`


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