CBSE Class 10 Science
Question 24 of 28
Chemical Reactions and Equations — Question 1
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Question Question 1
A solution of a substance 'X' is used for whitewashing.
(i) Name the substance 'X' and write its formula.
(ii) Write the reaction of the substance 'X' named in (i) above with water.
(i) The substance 'X' is calcium oxide (Quick lime). Its chemical formula is CaO.
(ii) Calcium oxide reacts vigorously with water to form calcium hydroxide (slaked lime).
CaO(s) + H2O (l) ⟶ Ca(OH)2 (aq)