Question

Write a balanced molecular equation for the reaction of each of the following metals with water. If no reaction
occurs, put NR.
(a) Na
(b) Ba
(c) Cu
(d) Ni

Answer 1

a)   Sodium metal reacts with water (Na is first group element)

          Balanced molecular equation is

         2Na (s) + 2H₂O→ 2 NaOH (aq) + H₂ (g)

        In this reaction sodium hydroxide (caustic soda) and hydrogen gas will be produ

b)   Barium is 2^nd group element. Barium reacts readily with water to form barium hydroxide (Ba(OH)₂ )      and hydrogen gas.

    Balanced molecular equation is

       Ba (s) + 2H₂O (g) → Ba(OH)₂ (aq) + H₂ (g)

c) Cu

Cu do not react with water, therefore NR (No reaction)

d) Ni

    Nickel is water insoluble.

    Ni do not react with water, therefore NR (No reaction)