Question

Write the chemical name and formula of washing soda. How is it prepared ? Write balanced chemical equation of the reaction.

Answer 1

Chemical name of washing soda is sodium carbonate
formula is Na2CO3
NaHCO3------------- H2O+Na2CO3

Answer 2

The 'chemical name' of 'washing soda' is "Sodium Carbonate Decahydrate".

EXPLANATION:

Formula for washing soda is $\bpld{\mathrm{Na}_{2} \mathrm{CO}_{3} \cdot 10 \mathrm{H}_{2} \mathrm{O}}$

Sodium carbonate is obtained by heating baking soda. The recrystallization of baking soda is then done to get washing soda.

The chemical equation for the reaction is:

$\begin{array}{l}{2 \mathrm{NaHCO}_{3}+\text { Heat } \rightarrow \mathrm{Na}_{2} \mathrm{CO}_{3}+\mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O}} \\ {\mathrm{Na}_{2} \mathrm{CO}_{3}+10 \mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{Na}_{2} \mathrm{CO}_{3}+10 \mathrm{H}_{2} \mathrm{O}}\end{array}$

In the first equation, washing soda is being heated to give sodium carbonate. In the second equation, sodium carbonate is again recrystallized with water to give washing soda.