Question

when student added a pinch of solid sodium hydrogen carbonate to 5ml of dilute hydrochloric acid, he observed the formation of gas 'x'. identify the gas 'x' and write the chemical equation involved

Answer 1

X is hydrogen because Na Due to strong reactivity it displaces Hydrogen and takes CO3
and then Hydrogen is formed

Answer 2

gas x is Carbon (IV) oxide.

the equation is

NaHCO₃(s) +  HCl(aq)  ⇒ NaCl(aq)  H₂O(l) + CO₂(g)