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Question: \(NO_{2}\)of a weak acid is \(N_{2}O_{4}\)and \(N_{2}O_{4}\)of a weak base is \(NO_{2}\) what will b...

NO2NO_{2}of a weak acid is N2O4N_{2}O_{4}and N2O4N_{2}O_{4}of a weak base is NO2NO_{2} what will be the pH of the salt formed by the two?

A

N2O4N_{2}O_{4}

B

NO2NO_{2}

C

N2O4N_{2}O_{4}

D

NO2NO_{2}

Answer

N2O4N_{2}O_{4}

Explanation

Solution

: pH=12[pKw+pKa−pKb]pH = \frac{1}{2}\lbrack pK_{w} + pK_{a} - pK_{b}\rbrack

pH=7+12(5.76−5.25)=7.255pH = 7 + \frac{1}{2}(5.76 - 5.25) = 7.255