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Which of the following attacks glass?...

Which of the following attacks glass?

A

`HCl`

B

`HF`

C

`HI`

D

`HBr`

Text Solution

Verified by Experts

The correct Answer is:
B
Glass being a mixture of sodium and calcium silicates reacts with hydrofluoric and forming sodium and calcium fluorosilicates respectively.
`{:(Na_(2)SiO_(3)+3H_(2)F_(2)toNa_(2)SiF_(4)+3H_(2)O),(CaSiO_(3)+3H_(2)F_(2)toCaSiF_(4)+3H_(2)O):}`
The etching of glass is based on these reactions.
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