The \( \mathrm{OH}^{-} \)concentration in a mixture of \( 5.0 \mathrm{~mL} \) of \( 0.0504 \math...

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The \( \mathrm{OH}^{-} \)concentration in a mixture of \( 5.0 \mathrm{~mL} \) of \( 0.0504 \mathrm{MNH}_{4} \mathrm{Cl} \) and \( 2 \mathrm{~mL} \) of \( 0.0210 \mathrm{MNH}_{3} \) solution is
P
W \( \mathrm{x} \times 10^{-6} \mathrm{M} \). The value of \( \mathrm{x} \) is (Nearest integer)
[Given \( \mathrm{K}_{w}=1 \times 10^{-14} \) and \( \mathrm{K}_{b}=1.8 \times 10^{-5} \) ]
[JEE Main-2021]
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