Question

b) Ranjana has two unknown solutions: X, and Y She performed certain tests with
Indicators and observed the following
( Solution
phenolphthalein remains colourless
( Solution Y + sugar solution → Phenolphthalein tums pink
Solution X + Solution Y
Phenolphthalein remains colourless
identify the nature of the solution X and Y . give one property for each of them .​

Answer 1

Solution X is acidic.

Solution Y is basic.

Solution X + Solution Y is neutral.

Properties of acids are:

1. Acid are sour.

2 .Acid are water soluble

3 . Solution of acid turns blue litmus to red.

Properties of base are :

1. Base are bitter .

2.Bases feel slippery or soapy.

3. Solution of base turns red litmus to blue.

Properties of neutral are

1. It does not change the colour of litmus-paper.

2. Tend to be harmless.

Explanation:

Phenolphthalein turns colourless in presence of an acid and turns pink in presence of a base.