Question

In, $Na+H_{2}O⟶{Na}^{+}+\frac{1}{2}{H}_2;Na$ is not Arrhenius acid because it is an element and not a compound. If true write 1, else write 0.

Answer 1

Arrhenius acid : Substance which gives $H^{+}$ ion on dissolving in water ($H^{+}$ donor).

$Na+H_{2}O⟶{Na}^{+}+\frac{1}{2}{H}_2$

So here Na is not a acid as it doesnt give any hydrogen ion.