Question

Classify each of these soluble solutes as a strong electrolyte, a weak electrolyte, or a nonelectrolyte. Solutes formula hydrochloric acid hcl sodium hydroxide naoh formic acid hcooh methyl amine ch3nh2 potassium chloride kcl ethanol c2h5oh sucrose c12h22o11

Answer 1

Compounds which on dissolving in water gets completely dissociates into its ions are known as strong electrolytes whereas compounds which on dissolving in water gets partially dissociates into its ions are known as weak electrolytes.

Substances which gives solution on dissolving in water and do not dissociates into ions also does not conduct electric current are known as nonelectrolyte.

• Hydrochloric acid, $HCl$

On adding $HCl$ (strong acid) in water, it will completely dissociates into ions ($H^{+}$ and $Cl^{-}$) and thus, it is a strong electrolyte.

• Sodium hydroxide, $NaOH$

On adding $NaOH$ (strong base) in water, it will completely dissociates into ions ($Na^{+}$ and  $OH^{-}$) and thus, it is a strong electrolyte.

• Formic acid, $HCOOH$

On adding $HCOOH$ (weak acid) in water, it will partially dissociates into ions ($H^{+}$ and  $HCOO^{-}$) and thus, it is a weak electrolyte.

• Methyl amine, $CH_3NH_2$

On adding $CH_3NH_2$ (weak base) in water, it will partially dissociates into ions ($CH_3NH_3^{+}$ and  $OH^{-}$) and thus, it is a weak electrolyte.

• Potassium chloride, $KCl$

On adding $KCl$ in water, it will completely dissociates into ions ($K^{+}$ and  $Cl^{-}$) and thus, it is a strong electrolyte.

• Ethanol, $C_2H_5OH$

On adding $C_2H_5OH$ in water, it will not dissociates into ions  and thus, it is a nonelectrolyte.

• Sucrose, $C_{12}H_{22}O_{11}$

On adding $C_{12}H_{22}O_{11}$ in water, it will not dissociates into ions  and thus, it is a nonelectrolyte.