Question

how would you distinguish between baking powder and washing soda by heating​

Answer 1

Baking soda (NaHCO3) on heating produces carbon dioxide (CO2), which extinguishes a burning matchstick. But washing soda (Na2CO3.10H2O) on heating does not produce any such gas, thus, it has no effect on burning matchstick.

Answer 2

Answer:

Baking powder(NaHCO3) on heating produces carbon dioxide which distinguishes the burning matchstick.

But washing soda(Na2co3.10H2o) on heating does not produce any such gas,

thus, it has no effect on burning matchstick.