Question

1. A solution of a substance 'X' is used for white washing.
(i) Name the substance 'X' and write its formula.
(ii) Write the reaction of the substance 'X' named in (1) above with
water.
the tort tuhes in Activityहवाई ​

Answer 1

Explanation:

Given -

• A solution of a substance X is used for whitewashing.

To Find -

1. Name the substance X and write its formula
2. write the reaction of substance X with water.

Solution :-

As we know that :-

• The solution of Calcium oxide (CaO) is used in whitewashing.

Now,

1)

X is Calcium oxide (CaO)

2)

When calcium oxide reacts with water then it forms calcium hydroxide.

Chemical equation :-

• CaO + H2O → Ca(OH)2

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)