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Which can do glass etching ?...

Which can do glass etching ?

A

`HIO_(4)`

B

`SiF_(4)`

C

`HF`

D

`HNO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
C
Glass is a mixture of sodium and calcium silicate. It reacts with HF forming sodium and calcium fluorosilicates respectively.
`Na_(2)SiO_(3) +6HF to Na_(2)SiF_(6) +3H_(2)O`
`CaSiO_(3) +6HF to CaSiF_(6) +3H_(2)O`
The etching of glass is based on these reactions.
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