MCQ
The weakest acid among the following is :
- AHCOOH
- ✓$C _2 H _5- CH _2- COOH$
- C$CH _3 COOH$
- D$CH _3- CH _2- COOH$
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$Pt(s)|\mathop {{H_2}(g)}\limits_{1\ atm} |HA\,\,\,\,\,\mathop {1\,M}\limits_{({K_a} = {{10}^{ - 7}})} \,\,||\,HB\,\,\,\,\,\mathop {1\,M}\limits_{({K_1} = {{10}^{ - 5}})}$
$\,|\mathop{{H_2}(g)}\limits_{1\ atm} |Pi(s)$