Hydrogen Ques 1
1. Which of the following statements about hydrogen is incorrect?
[2016]
(a) hydrogen has three isotopes of which protium is the most common.
(b) Hydrogen never acts as cation in ionic salts except in metal hydrides where it does act as a cation
(c) Hydronium ion, $H_3 O^{+}$ does not exist freely in solution
(d) Dihydrogen does act as a reducing agent
Show Answer
Solution:
Among the three isotopes of hydrogen, Protium $( _1^{1} H)$ is most common. It is a reducing agent. It reduces oxides, chlorides and sulphides of certain metals and produces free metals at ordinary temperature.
$CuO+H_2 \to Cu+H_2O$
BETA
