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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
Ionic Equilibrium

NTA Abhyas 2020 · Chemistry · Ionic Equilibrium

When 0.01 moles of the following acids are dissolved in 1L of H _ 2...

When 0.01 moles of the following acids are dissolved in 1L1L of H2O{H}_{2}O , the [H+][ H^{+} ] will be greatest in: -

Options

  1. AHNO2;pka=3.0{HNO}_{2} ;pka = 3.0
  2. BHCOOH;pka=3.75HCOOH; pka = 3.75
  3. CHCN;pka=9.4HCN; pka = 9.4
  4. DCH3COOH;pka=4.75C{H}_{3}COOH; pka = 4.75

Correct answer

A. HNO2;pka=3.0{HNO}_{2} ;pka = 3.0

Step-by-step solution

[H+]=ka×c[ H^{+} ] = \sqrt{{k}_{a} \times c}
ka↑pka↓[H+]↑{k}_{a} ↑ pka ↓ [ H^{+} ] ↑
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