Name: pH Scale
Uploaded: 2019-07-19
Duration: 9 min 45 s
Description: This video discusses the pH of acids, bases, and salts and also the limitations of using a pH scale for identification. The natural indicators do the verific...

Question

Complete the following table:

S. No	Solution	Indicator	Initial colour of indicator	Final colour of indicator
1	Milk of magnesia	Phenolphthalein
2	Vinegar			Red
3	Shampoo		Yellow
4	Soap solution	China Rose
5	Sodium hydroxide			Pink
6	Slaked lime		Purple	Green

Accepted Answer

Completed table is as follows:
Milk of magnesia is basic. Therefore, it is pink in colour.

Vinegar is weakly acidic, therefore, it turns blue litmus to red.

The shampoo is basic; therefore, natural indicator turmeric changes its colour from yellow to red.

Soap solution contains sodium hydroxide, which is a base, and it turns china rose to green.

Sodium hydroxide is a base, and hence phenolphthalein turns into pink.

Slaked lime is calcium hydroxide, which is a base and it turns china grass from purple to green.

S. No Solution Indicator Initial colour of indicator Final colour of the indicator

1 Milk of magnesia Phenolphthalein Colourless Pink

2 Vinegar Blue litmus paper Purple Red

3 Shampoo Turmeric Yellow Red

4 Soap solution China Rose Purple Green

5 Sodium hydroxide Phenolphthalein Colourless Pink

6 Slaked lime China rose Purple Green

Complete the following table:

S. No Solution Indicator Initial colour of indicator Final colour of indicator

1 Milk of magnesia Phenolphthalein

2 Vinegar Red

3 Shampoo Yellow

4 Soap solution China Rose

5 Sodium hydroxide Pink

6 Slaked lime Purple Green

Important Questions on Acids, Bases and Salts

Learn and Prepare for any exam you want !

Complete the following table: S. No Solution Indicator Initial colour of indicator Final colour of indicator 1 Milk of magnesia Phenolphthalein 2 Vinegar Red 3 Shampoo Yellow 4 Soap solution China Rose 5 Sodium hydroxide Pink 6 Slaked lime Purple Green

Important Questions on Acids, Bases and Salts

Learn and Prepare for any exam you want !

Complete the following table:

S. No Solution Indicator Initial colour of indicator Final colour of indicator

1 Milk of magnesia Phenolphthalein

2 Vinegar Red

3 Shampoo Yellow

4 Soap solution China Rose

5 Sodium hydroxide Pink

6 Slaked lime Purple Green