Question

when acetic acid is added to a solution of sustance X,a colorless and odourless gas Y is formed. The gas Y turns lime water milky.Identify X and Y. write a balanced chemical equation for the reaction

Answer 1

X is sodium bicarbonate (NaHCO3) and Y gas is CO2 gas  . CO2 gas will turn lime water milky by the formation of CaCO3. The reaction is :

CH3COOH + NaHCO3 → CH3COONa + CO2 + H2O

Answer 2

CH3COOH + NaHCO3 ---------- CH3COONa + H2O + CO2(GAS)

Ca(OH)2 + CO2 ------- CaCO3 + H2O

X= NaHCO3
Y=CO2

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