Which of the following can react with K_{2}Cr | vedclass

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Question

(A) $K_{2}Cr_{2}O_{7}$ acts as a strong oxidizing agent in acidic medium.It can oxidize sulfite ions $(SO_{3}^{2-})$ to sulfate ions $(SO_{4}^{2-})$.T

Vedclass · Accepted Answer

$SO_{3}^{2-}$

Vedclass · Answer

(A) $K_{2}Cr_{2}O_{7}$ acts as a strong oxidizing agent in acidic medium.It can oxidize sulfite ions $(SO_{3}^{2-})$ to sulfate ions $(SO_{4}^{2-})$.The balanced ionic reaction is:$Cr_{2}O_{7}^{2-} + 3SO_{3}^{2-} + 8H^{+} \rightarrow 2Cr^{3+} + 3SO_{4}^{2-} + 4H_{2}O$Other ions like $CO_{3}^{2-}$,$SO_{4}^{2-}$,and $NO_{3}^{-}$ are either already in their highest oxidation state or do not undergo redox reaction with dichromate under standard conditions.

Which of the following can react with $K_{2}Cr_{2}O_{7}$?

Similar Questions

In order to oxidize a mixture of $1 \text{ mole}$ each of $FeC_2O_4$,$Fe_2(C_2O_4)_3$,$FeSO_4$,and $Fe_2(SO_4)_3$ in an acidic medium,the number of moles of $KMnO_4$ required is:

Which one is the oxidising agent in the reaction below?
$2CrO_4^{2-} + 2H^{+} \to Cr_2O_7^{2-} + H_2O$

$H_2S$ acts only as a reducing agent while $SO_2$ can act both as a reducing and oxidizing agent because

Number of moles of $MnO_4^{-}$ required to oxidise one mole of ferrous oxalate completely in acidic medium will be $:-$ (in $mole$)

Which of the following species is both basic and a reducing agent?

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