MolSynapsequestion bank

MolSynapse / Question bank / Redox Reactions / Oxidising and reducing agents, disproportionation

JEE Main levelOne or more correct optionsDifficulty 2 of 3rx072

Which of the following are disproportionation reactions?

A $2 Cu X^{+} Cu X^{2 +} + Cu$
B $2 NO X_{2} + 2 OH X^{-} NO X_{2} X^{-} + NO X_{3} X^{-} + H X_{2} O$
C $Zn + Cu X^{2 +} Zn X^{2 +} + Cu$
D $2 H X_{2} O X_{2} 2 H X_{2} O + O X_{2}$

Answer: A, B, D

Disproportionation needs one element in a single oxidation state going both up and down. Cu goes from +1 to +2 and 0; N in

NO X_{2}

goes from +4 to +3 and +5; O in

H X_{2} O X_{2}

goes from -1 to -2 and 0. The

Zn

/

Cu X^{2 +}

reaction is an ordinary displacement involving two different elements.

Practice Redox Reactions More on Oxidising and reducing agents, disproportionation

Previous questionNext question

More questions on Oxidising and reducing agents, disproportionation