Q. 235.0( 1 Vote )
A black compound A. – 3 to +3
B. – 3 to 0
C. – 3 to +5
D. 0 to – 3
when a black compound of manganese reacts with a halogen the following reaction takes place:
MnO2 + 4HCl MnCl2 + 2H2O + Cl
A greenish yellow gas is produced, it means that chlorine is liberated during the reaction
When excess of Cl2 reacts with ammonia:
NH3 + 2Cl2NCl3 + 3HCl
Oxidation state of nitrogen in NH3 can be calculated by
Let the oxidation state of N is x.
X + 3*(+1) = 0, x = -3
Oxidation state of NCl3 can be calculated by
X + 3*(-1) = 0, x = +3
Therefore oxidation state of nitrogen varies from -3 to +3.
Hence the correct option is (i).
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