Advertisements
Advertisements
Question
How will the action of dilute hydrochloric acid enable you to distinguish between sodium thiosulphate and sodium sulphite?
Solution
Sodium thiosulphate reacts with \[\ce{dil. HCl}\] to produce sulphur dioxide gas and precipitates yellow sulphur.
\[\ce{Na2S2O3 + 2HCl → 2NaCl + H2O + SO2 + S↓}\]
Sulphur is not precipitated when sulphites are treated with \[\ce{dil. HCl}\].
\[\ce{Na2SO3 + 2HCl -> 2NaCl + H2O + SO2 ^}\]
APPEARS IN
RELATED QUESTIONS
Potassium sulfite on reacting with hydrochloric acid releases _______ gas. (Cl2, SO2, H2S)
State your observations when Dilute Hydrochloric acid is added to Sodium thiosulphate.
Give a chemical test to distinguish between the given pairs of chemicals:
Sodium chloride solution and Sodium nitrate solution
Explain why anhydrous \[\ce{HCl}\] is a poor conductor while aqueous \[\ce{HCl}\] is an excellent conductor.
How will the action of dilute hydrochloric acid enable you to distinguish between sodium carbonate and sodium sulphite?
What would happen if
Calcium oxide is used to dry hydrogen chloride.
What is the property of concentrated sulphuric acid which allows it to be used in the preparation of hydrogen chloride and nitric acid?
Write a fully balanced of the following case :
Red lead is warmed with concentrated hydrochloric acid.
Write observation:
Lead nitrate solution is mixed with dilute hydrochloric acid and heated.
The ratio between the volumes occupied by 4.4 grams of carbon dioxide and 2 grams of hydrogen gas is ______.
