Question

Using the Arrhenius concept of acids and bases, identify the Arrhenius acid and base in each of the following reactions: 2KOH(aq)+H2SO4(aq)→K2SO4(aq)+2H2O(l) NH3(g)+HCl(g)→NH4Cl(s) Drag the appropriate items to their respective bins.

Answer 1

Answer :

(1) $KOH$ is act as a base and $H_2SO_4$ act as an acid.

(2) We can not classified as a base or an acid.

Explanation :

According to Arrhenius concept, a base is defined as a substance which donates hydroxide ions $(OH^-)$ when dissolved in water and an acid is defined as a substance which donates hydronium ions $(H_3O^+)$ in water.

(1) The given chemical reaction is:

$2KOH(aq)+H_2SO_4(aq)\rightarrow K_2SO_4(aq)+2H_2O(l)$

In this reaction, $KOH$ produces $OH^-$ ions and $H_2SO_4$ produces $H^+$ ions.

Thus, $KOH$ is act as a base and $H_2SO_4$ act as an acid.

(2) The given chemical reaction is:

$NH_3(g)+HCl(g)\rightarrow NH_4Cl(s)$

Arrhenius concept is only applicable on aqueous solution. Thus, we can not classified as a base or an acid.