Question

Write the chemical formula of washing soda. How can it be obtained from baking soda? Describe a household application of washing soda.

Solution

(i) Washing soda is sodium carbonate, Na₂CO₃ 10H₂O.
(ii) Baking soda on heating gives sodium carbonate

2NaHCO₃ $\overset{heat}{\to}$ Na₂CO₃ + CO₂+ H₂O

(iii) It is used as cleansing agent.

Some More Questions From Control and Coordination Chapter

Give two physical characteristics each of acids and bases.

What are indicators? Name four acid-base indicators and mention their colour change.

What are antacids?

What are olfactory indicators?

You are given the following solutions:

Hydrochloric acid (HCl), sulphuric acid (H₂SO₄), nitric acid (HNO₃), acetic acid (CH₃COOH), sodium hydroxide (NaOH), calcium hydroxide [(Ca(OH)₂], potassium hydroxide (KOH), magnesium hydroxide [Mg(OH)₂] and ammonium hydroxide (NH₄OH). Give the colour change for each of these solutions with red litmus, blue litmus, phenolphthalein and methyl orange solutions.

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Control And Coordination

Write the chemical formula of washing soda. How can it be obtained from baking soda? Describe a household application of washing soda.

Some More Questions From Control and Coordination Chapter

Give two physical characteristics each of acids and bases.

What are indicators? Name four acid-base indicators and mention their colour change.

What are antacids?

What are olfactory indicators?

Choose the olfactory indicators and give their characteristics: red cabbage extract, onion, vanilla extract, litmus, clove oil.

What do you understand by concentrated and dilute acids?

How do metals react with bases?

What is a neutralization reaction? Give some examples.

What are non-metallic oxides? Substantiate your answer.

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