Question

A solution of a substance X used for white washing.
i Name the substance X and write its formula.
ii Write the reaction of this substance CO2.​

Answer 1

Answer:

(i) Calcium hydroxide (lime water) is used and its formula is Ca(OH)₂.

(ii) Calcium Hydroxide reacts with Carbon Dioxide to give Calcium Carbonate (limestone) and Water

Ca(OH)₂ + CO₂ ---------> CaCO₃ + H₂O

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Answer 2

Answer:

Ans. i. The substance whose solution is water is used for white washing is calcium oxide. Its formula is CaO.

ii. CaO(s) + H2O(l) Ca(OH)2(aq)