Which of the following salts will give highest p H in water?

Which of the following salts will give highest

p H

in water?

$K C l$
$N a C l$
$N a_{2} C O_{3}$
$C u S O_{4}$

Solution

N a_{2} C O_{3}

is basic due to hydrolysis of

C O_{3}^{2 -}

ion

C O_{3}^{2 -} + H_{2} O ⇌ H C O_{3}^{-} + O H^{-}

Asked in: NEET 2014

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