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प्रश्न
Using dilute sulphuric acid how would you differentiate between:
Sodium sulphide and sodium carbonate.
How would you identify the gaseous products evolved.
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उत्तर
Sodium sulphide → H2S
Na2S + H2SO4→ Na2SO4 + H2 S→Turns lead acetate paper silvery black
Sodium carbonate → CO2
Na CO + H9SO4 → Na2SO4 + H2O + CO2
CO2 — Turns lime water milky.
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संबंधित प्रश्न
Write a balanced equation for the following:
Iron reacts with dil. HCl
From the knowledge of activity series, name a metal which shows the following properties:
It displaces hydrogen from dilute HCl.
Complete the following word equation:
Calcium + water → calcium hydroxide + _________
Choose the correct option:
Hydrogen is evolved by the action of cold dil. HNO3 on
Give reason for the following:
Potassium and sodium are not used for reaction with dilute hydrochloric acid or dilute sulphuric acid in the laboratory preparation of hydrogen.
Select the odd one out and justify your answer.
Zn, Fe, Mg, and Na
Correct the following statement:
Very dilute nitric acid reacts with iron to produce hydrogen.
Give a chemical test to distinguish between the following gases:
Hydrogen chloride and hydrogen sulphide
State why hydrogen is not prepared in the laboratory by the action of calcium with dilute sulphuric acid.
Name the following.
A metal which cannot be used for the preparation of hydrogen using dilute acids.
