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For the given reactions SiO(2) +4HF ra...

For the given reactions
`SiO_(2) +4HF rarr SiF_(4) +2H_(2)O, DeltaH =- 10.17 kcal`
`SiO_(2) +4HCI rarr SiCI_(4) +2H_(2)O, DeltaH = 36.7 kcal`
It may be concluded that

A

`HF` will attack `SiO_(2)` and `HCI` will not

B

`HCI` will attack `SiO_(2)` and `HF` will not

C

`HF` and `HCI` both attack `SiO_(2)`

D

None attacks `SiO_(2)`

Text Solution

Verified by Experts

`DeltaG = DeltaH - T DeltaS =- ve`
All exothermic reactions are spontaneous, hence `HF` will attack `SiO_(2)`.
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