Question

a)2ml of vinegar is
taken in a test tube.
Dip a blue litmns paper
in it.

b)Take some calcium
carbonate in a boiling
tube, add dilute
hydrochloric acid to it.

c)Take some water
in a beaker, add
some quick lime
(calcium oxide) and stir it.
Add a drop of red litmus
solution in it.​

Answer 1

Explanation:

a) when blue litmus is put in a test tube with vinegar, there is change in ionisation of litmus, hence there is change in colour to red.

b) CO2 gas is evolved.

c) quick lime reacts vigoursly with water to form calcium hydroxide. after addition of red litmus solution, the red colour of litmus changes to blue.