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Question
Chemistry
Which of the following reactions can be followed by its colour change?
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Q. Which of the following reactions can be followed by its colour change?
Equilibrium
A
$SO _{2}( g )+1 / 2 O _{2}( g ) \rightleftharpoons SO _{3}( g )$
21%
B
$N _{2}( g )+3 H _{2}( g ) \rightleftharpoons 2 NH _{3}( g )$
14%
C
$2 HI ( g ) \rightleftharpoons H _{2}( g )+ I _{2}( g )$
46%
D
$C$ (graphite) $+ CO _{2}( g ) \rightleftharpoons 2 CO ( g )$
18%
Solution:
Vapours of Iodine are in violet colour