Question

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1. What is the use of washing soda?
2. What is the formula formula of borax and sodium hydroxide?
3. What is the use use of washing soda in laboratory?
( 2 × 3 = 6) marks
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Answer 1

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1

Answer:

Washing soda or sodium carbonate is one of the most useful chemicals in industry. It is used for:

1. Washing soda is used in the manufacture of glass, soap, paper and also chemicals like sodium hydroxide and borax.

2. Washing soda is used in the laundry for washing clothes and is a constituent of a number of dry soaps.

3. Washing soda is used as a cleaning agent for domestic purposes.

4. Washing soda is used as a useful regent in the laboratory.

5. Washing soda is used for removing permanent hardness from water.

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2

Answer:

The chemical formula of borax is $Na_2B_4O_7$.

The chemical formula of sodium hydroxide is $NaOH$.

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3

Answer:

The washing soda in laboratory is used as useful regent in the chemical laboratory.

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Answer 2

Explanation:

1. Washing soda is used to clean clothes

it is commonly in ariel and washing detergents

3. Washing soda is sodium carbonate of 10 molecules of water of crystallization.It is used to manufacture glass , paper, detergents , soaps