Question

List the raw materials needed for the manufacture of baking soda. Write the balancedchemical equation for this. What happens when baking soda is heated? Write chemicalequation.

Answer 1

Baking soda chemical name is sodium hydrogen carbonate. --NaHCO3
preparation:
Sodium Hydrogen carbonate is prepared on a large scale by reacting cold and concentrated solutions of sodium chloride with ammonia and carbondioxide
NaCl +  NH3  + H20  +CO2  -----> NaHCO3 +NH4Cl
action of heat:
when sodium hydrogen carbonate is heated , then it decomposes to give carbon dioxide and sodium carbonate and water.
                     heat
2NaHCO3 ------------------> Na2CO3  + H20+ CO2