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प्रश्न
How will you distinguish between the two black samples, CuO and MnO2 with a chemical test?
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उत्तर
Add concentrated hydrochloric acid to both the samples. Only MnO2 releases greenish yellow chlorine gas.
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संबंधित प्रश्न
State one relevant observation for the following
When hydrogen sulfide gas is passed through lead acetate solution.
Name an element which reacts with hydrogen to form a compound which is strongly acidic in water.
Give reason for the following:
An aqueous solution of chlorine in acidic in nature
Hint : Cl2 + H2O ⟶ HCl +HClO
How will the action of dilute hydrochloric acid enable you to distinguish between sodium thiosulphate and sodium sulphite?
Write balanced equcation for the following reaction:
Manganese (IV) oxide and concentrated hydrochloric acid.
What is the property of concentrated sulphuric acid (H2SO4) which allows it to be used in the preparation of hydrogen chloride (HCl) and nitric acid (HNO3)?
Give a chemical test to distinguish between the following pair of compounds:
Hydrogen chloride gas and hydrogen sulphide gas
Write the balanced equation for the reaction of dilute hydrochloric acid with the following:
Sodium hydrogen carbonate
State which of the two - a solution of HCl in water or in toluene is an electrolyte. Explain.
State which of the two - a solution of HCl in water or in toluene is an electrolyte. Explain.
