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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.
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
Complete the following word equation:
Calcium + water → calcium hydroxide + _________
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Hydrogen is collected by the downward displacement of water and not of air, even though it is lighter than air.
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Correct the following statement:
Very dilute nitric acid reacts with iron to produce hydrogen.
Using dilute sulphuric acid how would you differentiate between:
Copper and magnesium
How would you identify the gaseous products evolved.
Name the following.
A metal below iron but above copper in the activity series of metals which has no reaction with water.
Name the following.
A metal which cannot be used for the preparation of hydrogen using dilute acids.
