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Salt of Weak Acid and Weak Base

The aqeous so...

Question

The aqeous solution of the following salt will have the lowest pH:

NaClO₃

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NaClO

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NaClO₂

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NaClO₄

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Solution

The correct option is D
NaClO₄

$N a C l O_{4} \to N a^{+} C l O_{4}^{-}$

$C l O_{4}^{-} + H^{+} \to H C l O^{4}$

Perchloric acid is the strongest acid hence lowest pH.

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OPTIONS

1) Na 3) NaClO

2) NaCl 4) NaClO₃

Which of the following salt solutions ( $0.1 M$ each) will have the lowest pH values?

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