Question

b) Which gas is released when sodium carbonate reacts with
hydrochloric acid? How do you test this gas? Write the word equation for
this reaction.​

Answer 1

$\huge\mathtt{Answer:-}$

When sodium carbonate reacts with hydrochloric acid, Carbon dioxide gas is released.

To test the gas:-

Pass the gas through calcium hydroxide,the solution turns milky indicating that the gas is Carbon dioxide.

Word Equation:-

Na2CO3+HCl------>NaCl+CO2+H2O

Answer 2

Carbon dioxide

To test the gas pass the Carbon dioxide gas through Calcium hydroxide solution..

word equation,

Hydrochloric acid + Sodiumcarbonate >Salt + water+ Carbon dioxide.

2HCl + Na²CO³ > 2NaCl+ H²O+CO²

That's all ...