Question

1. The following reactions all have K > 1.
1) C₆H₅COO^-(aq) + HF (aq) --> F^-(aq) + C₆H₅COOH (aq)
2) C₆H₅COO^-(aq) + HC₉H₇O₄(aq) --> C₆H₅COOH (aq) + C₉H₇O₄^-(aq)
3) HF (aq) + C₉H₇O₄^-(aq) --> HC₉H₇O₄(aq) + F^-(aq)


Arrange the substances based on their relative acid strength

F- HF C6H5COO- C9H7O4- HC9H7O4 C6H5COOH

strongest acid intermediate acid weakest acid not a Bronsted-Lowry acid

2. The following reactions all have K > 1.
1) NO₂^-(aq) + HF (aq) --> HNO₂(aq) + F^-(aq)
2) HCOO^-(aq) + HF (aq) --> F^-(aq) + HCOOH (aq)
3) HNO₂(aq) + HCOO^-(aq) --> HCOOH (aq) + NO₂^-(aq)

Arrange the substances based on their relative acid strength

HCOO- HCOOH F- HF NO2- HNO2

strongest acid intermediate acid weakest acid not a Bronsted-Lowry acid

Answer 1

Answer 1

Based on acidic character:-

HF > C₆H₅COOH > HC₉H₇O₄ > C₆H₅COO^- > C₉H₇O₄^- > F^-

Strongest acid = HF

Intermediate acid= C₆H₅COOH

Weakest acid = HC₉H₇O₄

_{Not a bronsted-lowry acid = F}- , C₆H5COO^- and C₉H₇O₄^-   

ANSWER 2 .

based on acidic character:-

HF > HNO₂ > HCOOH > NO₂^- > HCOO^- > F^-

Strongest acid = HF

Moderate acid = HNO₂

Weakest acid = HCOOH

Not a bronsted-lowry acid = F^- , NO₂^- , HCOO^-