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Chemistry
When 0.01 moles of the following acids are dissolved in 1 L of H 2 O , the [ H +] will be greatest in:
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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 Abhyas
NTA Abhyas 2020
Equilibrium
A
$HNO _{2} ; pka =3.0$
25%
B
$HCOOH ; pka =3.75$
25%
C
$HCN ; pka =9.4$
25%
D
$CH _{3} COOH ; pka =4.75$
25%
Solution:
$\left[ H ^{+}\right]=\sqrt{ k _{ a } \times c }$
$k _{ a } \uparrow pka \downarrow\left[ H ^{+}\right] \uparrow$