pBlock ElementsII 1 Question 41

41. Ammonia gas can be dried by

(a) conc H2SO4

(c) CaCl2

(b) P2O5

(d) quicklime

(1978,1M)

Show Answer

Answer:

Correct Answer: 41. (d)

Solution:

  1. Quicklime (CaO) is used for drying NH3 gas because both are basic, do not react. On the other hand, H2SO4 and P2O5 are acidic, reacts with ammonia forming salts. CaCl2 forms complex with ammonia.
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