${CuSO}_4+{KCN} \longrightarrow {X}+({CN})_2$ ${X}+ \text{excess }{KCN} \longrightarrow {Y}+ \text{byproduct}$ ${Cd}^{+2}+ \text{excess } {CN}^{-} \longrightarrow {Z}$ If ${Y}$ and ${Z}$ are soluble complexes, then the incorrect statement about the reactions in the following.

Where '${X}$' and '${Y}$' have copper in +1 oxidation state

Where $Y$ and $Z$ are colourless complexes

Number secondary valencies in $Y$ and $Z$ are 4

NEET UG CHEMISTRY MCQ: CO-ORDINATION COMPOUNDS

1 Hard

1 of 1

Analyzing +4 | -1

{CuSO}_4+{KCN} \longrightarrow {X}+({CN})_2

{X}+ \text{excess }{KCN} \longrightarrow {Y}+ \text{byproduct}

{Cd}^{+2}+ \text{excess } {CN}^{-} \longrightarrow {Z}

{Y}

and

{Z}

are soluble complexes, then the incorrect statement about the reactions in the following.

View answer and explanation

Correct option: A

In the formation of '

{X}

{CuSO}_4

acts as reducing agent

Option A (In the formation of '

{X}

{CuSO}_4

acts as reducing agent) is correct because in the reaction,

CuSO_4

is reduced to

CuCN

, hence it acts as an oxidizing agent, not a reducing agent.