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Question

An aqueous solution of which of the following compounds will have a pH < 7?

A
TiCl4
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B
FeCl3
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C
CuSO4
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D
All of these
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Solution

The correct option is D All of these
Salts of strong acid and weak base will have `pH` less than 7.

TiCl4+H2OTi(OH)2+HCl
FeCl3+H2OFe(OH)3+HCl
CuSO4+H2OCu(OH)2+H2SO4

All of these compounds are the salts of strong acid and weak base. So all compounds have `pH` less than 7.

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