Question

The aqueous solution of which of the following electrolyte will conduct electric current to large extent
a)Mg(OH)2
b)H2CO3
c)NH4Cl
d)NH4OH

Give reason for each option.

Answer 1

Answer: a) $Mg(OH)_2$

Explanation:

a) $Mg(OH)_2$: Strong bases are defined as the base which completely dissociates when dissolved in water and is a strong electrolyte.

$Mg(OH)_2\rightarrow Mg^{2+}+2OH^-$

As it produces 3 ions on dissociation , thus would conduct electricity to largest extent.

b) $H_2CO_3$ : Weak acid is defined as the acid which does not completely dissociates when dissolved in water and is a weak electrolyte.

$H_2CO_3\rightleftharpoons 2H^{+}+CO_3^{2-}$

c) $NH_4Cl$: Salt is defined as the substance formed by combination of acid and base, which completely dissociates when dissolved in water and is a strong electrolyte.

$NH_4Cl\rightarrow NH_4^{+}+Cl^-$

d) $NH_4OH$: Weak bases are defined as the basis which does not completely dissociates when dissolved in water and is a weak electrolyte.

$NH_4OH\rightleftharpoons NH_4^++OH^-(aq.)$

$Mg(OH)_2$ would conduct electricity to largest extent.

Answer 2

Answer:

MG (OH)2

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