Question

The products formed when sodium reacts with cold water are:

• A. sodium oxide
• B. sodium hydroxide
• C. hydrogen gas
• D. water

Answer 1

Answer: (B), (C)

The correct options are
B sodium hydroxide
C hydrogen gas

Alkali metals react vigorously with cold water to form respective metal hydroxides and hydrogen gas. Sodium reacts with cold water to form sodium hydroxide and hydrogen gas. The reaction involved is:

$\mathrm{Na}\left(s\right)+H_{2}O\left(l\right)\stackrel{}{\to }\mathrm{NaOH}\left(\mathrm{aq}\right)+H_2\left(g\right)$