Question

29 Identify X and Y in the in the given set of reactions. Sodium hydrogen carbonate + hydrochloric acid (aq) → X (aq) + water + Y Y+ lime water + white ppt + water Y х Y А NaCl CO2 B NaOH CO2 C Na2CO: H2 D NaCl 02​

Answer 1

A) NaCl and CO₂

  X is NaCl and Y is CO₂

Explanation:

Reaction:

NaHCO₃ + HCl → NaCl + CO₂ + H₂O

Ca(OH)₂ + CO₂ → CaCO₃ + H₂O

Formula of lime water is Ca(OH)₂. From the above reaction, we obtain the white precipitate of CaCO₃.