Question

A compound X is constituent of baking powder it is used as an antacid when X is heated it gives out gas by which when passed through lime water turns milky and solve that is from which is the main constituent of washing powder identify xy and Z balance chemical equation for the reaction involved

Answer 1

X - NaHCO₃

Y - CO₂

Z - Na₂CO₃

Reactions involved are as follows-

1.  2NaHCO₃  ---Δ--->  Na₂CO₃ + H₂O + CO₂

          X                             Z                      Y

2.  Ca(OH)₂ + CO₂  ------>  CaCO₃ + H₂O

   lime water   Y                 white

3.  In stomach,

    NaHCO₃     +          HCl           ------>  NaCl + H₂O + CO₂

         X             hydrochloric acid        

4. Na₂CO₃ + 10H₂O  ------>  Na₂CO₃ . 10H₂O