Hydrogen - Result Question 1
####1. Which of the following statements about hydrogen is incorrect?
[2016]
(a) hydrogen has three isotopes of which tritium is the most common.
(b) Hydrogen never acts as cation in ionic salts
(c) Hydronium ion, $H_3 O^{+}$exists freely in solution
(d) Dihydrogen does not act as a reducing agent
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Solution:
- (a, d) Among the three isotopes of hydrogen, Protium $( _1^{1} H)$ is most common. It is an energetic reducing agent. It reduces oxides, chlorides and sulphides of certain metals and produce free metals at ordinary temperature.
$CuO+2 H \to Cu+H_2 O$
