R3.1 Proton transfer reactions Questionbank

The $pK_a$ of phenol red is between 6.6 and 8.2.

In a strongly acidic solution $[HIn] < [In^-]$.

The In⁻ ions are yellow.

Phenol red would be a suitable indicator for the titration of a strong acid and a weak base.

Phosphoric acid and methylamine

Sulfuric acid and potassium hydroxide

Acetic acid and potassium hydroxide

Sulfuric acid and methylamine

A strong base is a good proton donor and has a weak conjugate acid.

A strong acid is a good proton donor and has a strong conjugate base.

A weak acid is a poor proton acceptor and has a strong conjugate base.

A strong acid is a good proton donor and has a weak conjugate base.

$CH_3COO^- \text{ and } H_3O^+$

$H_2O \text{ and } CH_3COO^-$

$H_2O \text{ and } H_3O^+$

$CH_3COOH \text{ and } H_2O$

chloroethanoic < ethanoic < hydrogen fluoride < hydrogen cyanide

ethanoic < chloroethanoic < hydrogen fluoride < hydrogen cyanide

chloroethanoic < ethanoic < hydrogen cyanide < hydrogen fluoride

hydrogen cyanide < ethanoic < hydrogen fluoride < chloroethanoic

I, II and III

II and III only

I and II only

I and III only

$CH_3COOH (aq) < HCl (aq) < NH_3 (aq) < NaOH (aq)$

$NaOH (aq) < NH_3 (aq) < CH_3COOH (aq) < HCl (aq)$

$HCl (aq) < NH_3 (aq) < NaOH (aq) < CH_3COOH (aq)$

$HCl (aq) < CH_3COOH (aq) < NH_3 (aq) < NaOH (aq)$

A weak acid is a proton donor and its aqueous solution shows good conductivity.

A weak acid is a proton donor and its aqueous solution shows poor conductivity.

A weak acid is a proton acceptor and its aqueous solution shows good conductivity.

A weak acid is a proton acceptor and its aqueous solution shows poor conductivity.

$H_2S$

$H_2SO_4$

$H_2SO_3$

$S^{2−}$

$HCl$ and $NaCl$

$HCl$ and $NH_3$

$NaOH$ and $HCOONa$

$NH_4Cl$ and $HCl$