When 0.01 moles of the following acids are dissolved in 1 L of H 2 O , the [ H +] will be greatest in:

Question

When 0.01 moles of the following acids are dissolved in 1 L of H 2 O , the [ H +] will be greatest in: (A) HNO 2 ; pka =3.0 (B) HCOOH ; pka =3.75 (C) HCN ; pka =9.4 (D) CH 3 COOH ; pka =4.75

Tardigrade Admin · Accepted Answer

[ H +]=√ k a × c k a uparrow pka downarrow[ H +] uparrow

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

$H N O_{2}; p ka = 3.0$

$H COO H; p ka = 3.75$

$H CN; p ka = 9.4$

$C H_{3} COO H; p ka = 4.75$

$[H^{+}] = k_{a} \times c$

$k_{a} ↑ p ka ↓ [H^{+}] ↑$

Q. When 0.01 moles of the following acids are dissolved in 1L of H2​O, the [H+] will be greatest in:

HNO2​;pka=3.0

HCOOH;pka=3.75

HCN;pka=9.4

CH3​COOH;pka=4.75