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Sulphuric Acid

Conc. H2SO4...

Question

Conc. $H_{2} S O_{4}$ , anhydrous $C a {C l}_{2}$ or $P_{4} O_{10}$ cannot be used as drying agent for ammonia, why?

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Solution

Calcium oxide is used as drying agent for ammonia as both are basic in nature and do not undergo any reaction, while any acidic drying agent undergoes reaction with ammonia.

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C a {C l}_{2}, H_{2} S O_{4}

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, which compound can be used for the drying of ammonia gas? Why?

Q. (i) How is ammonia gas prepared in laboratory starting from NH₄Cl? State the conditions and balanced equation for the preparation.
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