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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 reacts readily with cold water
Hydrogen can be prepared with the metal zinc by using:
acid
Give an equation.
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.
Give a reason for the following.
Hydrogen is collected by the downward displacement of water and not of air, even though it is lighter than air.
Select the odd one out and justify your answer.
Fe, Pb, Al and Zn
Correct the following statement:
Conc. H2SO4 reacts with zinc to liberate hydrogen.
Using dilute sulphuric acid how would you differentiate between:
Copper and magnesium
How would you identify the gaseous products evolved.
State why hydrogen is not prepared in the laboratory by the action of calcium with dilute sulphuric acid.
Name the following.
A metal below iron but above copper in the activity series of metals which has no reaction with water.
