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CBSE Class 10 Answered

Q. 1 A solution of substance X is used for white-washing .  (i) Name the substance X and write it's formula.  (ii) Write the reaction of substance X with water.   
Asked by honeyshukla9559 | 08 May, 2020, 09:24: AM
answered-by-expert Expert Answer

(i) The substance 'X' is calcium oxide. Its chemical formula is CaO.
 

(ii) Calcium oxide reacts vigorously with water to form calcium hydroxide (slaked lime).

            CaO      +      H2O    →    Ca(OH)2

Calcium oxide       Water        Calcium hydroxide

 

Answered by Varsha | 08 May, 2020, 12:44: PM

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