Chemistry - Complete d-block Question with Solution | TestHub

ChemistryComplete d-blockd-blockMedium2 minPYQ_2019

ChemistryMediummultiple choice

Fusion of $M n O_{2}$ with $K O H$ in presence of $O_{2}$ produces a salt $W .$ Alkaline solution of $W$ upon electrolytic oxidation yields another salt $X .$ The manganese containing ions present in $W$ and $X,$ respectively, are $Y$ and $Z .$ Correct statement(s) is (are)

Options:(select one or more)

Answer:

B, C, D

Solution:

$M_{n} O_{2} + 2 KOH + \frac{1}{2} O_{2} \overset{Δ}{\to} \underset{(W)}{K_{2} M_{n} O_{4}} + H_{2} O$
Oxidation state $+ 6$
Paramagnetic and green colored salt
$\to$ shape : Tetrahedra of anion $M_{n} O_{4}^{2-}$

Purple coloured and tetrahedra shape

Subject:ChemistryTopic:Complete d-blockSubtopic:d-block

⏱ 2mℹ️ Source: PYQ_2019

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