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Q. When 0.01 moles of the following acids are dissolved in $1 L$ of $H _{2} O ,$ the $\left[ H ^{+}\right]$ will be greatest in:

NTA AbhyasNTA Abhyas 2020Equilibrium

Solution:

$\left[ H ^{+}\right]=\sqrt{ k _{ a } \times c }$

$k _{ a } \uparrow pka \downarrow\left[ H ^{+}\right] \uparrow$