Question:

Ammonia gas can be dried by

Updated On: Jun 14, 2022
  • cone $H_2SO_4$
  • $P_2O_5$
  • $CaCl_2$
  • quicklime
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The Correct Option is D

Solution and Explanation

Quicklime (CaO) is used for drying $NH_3$ gas because both
are basic, do not react. On the other hand, $H_2SO_4\, and\, P_2O_5$
are acidic, reacts with ammonia forming salts. $CaCl_2$ forms
complex with ammonia.
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Concepts Used:

P-Block Elements

  • P block elements are those in which the last electron enters any of the three p-orbitals of their respective shells. Since a p-subshell has three degenerate p-orbitals each of which can accommodate two electrons, therefore in all there are six groups of p-block elements.
  • P block elements are shiny and usually a good conductor of electricity and heat as they have a tendency to lose an electron. You will find some amazing properties of elements in a P-block element like gallium. Itโ€™s a metal that can melt in the palm of your hand. Silicon is also one of the most important metalloids of the p-block group as it is an important component of glass.

P block elements consist of: