Question

Write the balanced equations with explanation for the following chemical reactions.

1. Barium chloride + Sodium sulphate → Barium sulphate + Sodium chloride.

2. Sodium + Water → Sodium hydroxide + Hydrogen

Answer 1

1. Barium chloride + Sodium sulphate → Barium sulphate + Sodium chloride.
$BaC{l}_2+N{a}_{2}S{O}_4\to BaS{O}_4+2NaCl$
It is a double displacement reaction where barium and sodium ions are exchanged.

2. Sodium + Water → Sodium hydroxide + Hydrogen
$2Na+2H_{2}O\to 2NaOH+H_2$
Alkali metals such as sodium react with water to form metal hydroxide and liberate hydrogen gas.