Question

sample of baking soda is strongly heated in a crucible it suffered a loss in weight of Raman ground find the mass of baking soda is​

Answer 1

Explanation:

The reaction is

2NaHCO3→Na2CO3+H2O+CO2

.

The loss in weight is due to water and carbon dioxide.

2

moles (

2

×

84

g) of sodium bicarbonate gives

1

mole (

18

g) of water and

1

mole of carbon dioxide (

44

g).

Thus, decomposition of

168

g of sodium bicarbonate will result in loss in weight of

18

+

44

=

62

g.

The loss in weight of 3.1 g corresponds to

168

62

×

3.1

=

8.4

g of sodium bicarbonate.