Question

24. A student was working in a chemistry laboratory. He found that a bottle contained a white
powdery substance but half of the label on the bottle was torn. The part of label still
sticking to the bottle had NaH written on it. The student took this powdery substance in a
test-tube and added dil. HCl to it. A gas was evolved which extinguished a burning match
stick​

Answer 1

Answer:

the gas is CO2 as it extinguishes the burning candel and the compound might be Na2Co3 or NaHco3 as only metal carbonates/hydrogen carbonates reacts with acids to evolute CO2 gas .

hope it helps you

pls mark me braniliest