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Chemistry · 2024 · 2 marks
The d-and f-Block ElementsSome Important Compounds of Transition Elements2 marksApplyvery short answer
CBSE 2024 · Region 3 · Set 2 · Q18
Complete and balance the following chemical equations: (a) KMnO_4 → heat (b) 2 MnO_4^-+5 C_2 O_4^2-+16 H^+ →
Complete and balance the following chemical equations :
(a)
$\displaystyle \mathrm{KMnO}_{4} \xrightarrow{\text { heat }}$
(b)
$\displaystyle 2 \mathrm{MnO}_{4}^{-}+5 \mathrm{C}_{2} \mathrm{O}_{4}^{2-}+16 \mathrm{H}^{+} \longrightarrow$
Marking-scheme solution
(a)
$\displaystyle 2\ \mathrm{KMnO_4} \xrightarrow{\text{heat}} \mathrm{K_2MnO_4} + \mathrm{MnO_2} + \mathrm{O_2}$
(b)
$\displaystyle 2\ \mathrm{MnO_4^-} + 5\ \mathrm{C_2O_4^{2-}} + 16\ \mathrm{H^+} \longrightarrow 2\ \mathrm{Mn^{2+}} + 10\ \mathrm{CO_2} + 8\ \mathrm{H_2O}$
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CBSE Class 12 Chemistry past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.