Question

Ramu added 2 ml of dil HCl to 0.5 gm of chemical A taken in a test tube.he passed the gas evolved into limewater and found that it turned milky.identify the chemical A.write the balanced chemical equatiion of the reactions of A with dil HCl and reaction of gas with lime water

Answer 1

Substance A is a metal carbonate/hydrogencarbonate
It can be Sodium or Calcium
CaCO3 + 2HCl - CaCl2 + CO2 + H20