ICSE Class 10 Chemistry Question 25 of 62

Study of Compounds — Sulphuric Acid — Question 27

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27
Question

Question 3(2010)

Select from A, B, C –

A: Sodium hydroxide solution.

B: A weak acid.

C: Dilute sulphuric acid.

The solution which liberates sulphur dioxide gas, from sodium sulphite.

Answer

Dilute sulphuric acid

Na2SO3 + H2SO4 [dil.] ⟶ Na2SO4 + H2O + SO2