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Question

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Explain the term ‘carbonation’ in relation to the manufacture of washing soda by Solvay’s process.

Solution

Carbonation is a process in which brine (NaCl) saturated with ammonia is allowed to come in contact with carbon dioxide under pressure to form sodium bicarbonate.

NH₃(g) +H₂O(l) +CO₂ → NH₄HCO₃(aq)
NH₄HCO₃(aq) +NaCl(aq) → NH₄Cl(aq) +NaHCO₃(s)

Some More Questions From Control and Coordination Chapter

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.

Take 5 ml hydrochloric acid in a boiling tube or a conical flask. Add a few pieces of zinc granules to it.

(a) What do you observe on the surface of zinc granules?
(b) Name the gas evolved.
(c) What happens when the above gas is passed through soap solution?
(d) What happens when a burning candle is brought near the gas filled tube?

Name four acids and bases. Write their formulae.

Name the various kind of oxides and mention their properties.

What are acids? How are they produced?

Mention important characteristics of acids.

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