Given below are two reactions of water with sodium and carbon dioxide. What is the nature of water is these reactions?
(i) `2Na_2H_(2)Orarr 2NaOH+H_(2)`
(ii) `6CO_(2)+12H_(2)Orarr C_(6)H_(12)O_(6)+6H_(2)O+6O_(2)`

Options

A. In (ii) water acts as an oxidising agent and in (i) it acts as a reducing agent.
B. In (i) water acts as an oxidising agent while in (ii) it acts as a reducing agent.
C. In both, (i) and (ii) hydrogen acts as a reducing agent.
D. In both, (i) and (ii) hydrogen acts as an oxidising agent.

Answer

B

Explanation

With sodium metal water acts as an oxidising agent and gets reduced to `H_(2)`, with `CO_(2)` water acts as a reducing agent and is oxidised to oxygen.