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Oxides and Oxoanions

Complete the ...

Question

Complete the given reaction.
2 $M n^{2 +}$ + 5 $(i)$ +8 $H_{2} O$ $\to$ 2 $(i i)$ +10 $(i i)$ +l6 $H^{+}$

A

(i) - S O_{4}^{2 -}, (i i) - M n O_{4}^{-}, (i i i) - S_{2} O_{8}^{2 -}

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B

(i) - S_{2} O_{8}^{2 -}, (i i) - M n O_{4}^{-}, (i i i) - S_{2} O_{4}^{2 -}

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C

(i) - M n O_{4}^{-}, (i i) - S_{2} O_{8}^{2 -}, (i i) - S O_{4}^{2 -}

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D

(i) - S_{2} O_{8}^{2 -}, (i i) - S O_{4}^{2 -}, (i i i) - M n O_{4}^{-}

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Solution

The correct option is A $(i) - S_{2} O_{8}^{2 -}, (i i) - M n O_{4}^{-}, (i i i) - S_{2} O_{4}^{2 -}$
${2 M n}^{2 +} + 5 S_{2} O_{8}^{2 -} + 8 H_{2} O ⟶ 2 {M n O}_{4}^{-} + 10 {S O}_{4}^{2 -} + 16 H^{+}$

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Similar questions

Q. In the reaction:

M n^{2 +} + S_{2} O_{8}^{2 -} \to S O_{4}^{2 -} + M n O_{4}^{-}

(acid medium), the number of moles of

S_{2} O_{8}^{2 -}

required to oxidize

2

M n^{2 +}

Q. Three different solutions of oxidising agents, i.e.

K_{2} C r_{2} O_{7}, I_{2}

K M n O_{4}

is titrated separately with

0.19

K_{2} S_{2} O_{3}

. The molarity of each oxidising agent is

0.1 M

and the reactions are as follows:
i.

C r_{2} O_{7}^{2 -} + S_{2} O_{3}^{2 -} \to C r^{3 +} + S O_{4}^{2 -}

I_{2} + S_{2} O_{3}^{2 -} \to I^{⊝} + S_{4} O_{6}^{2 -}

M n O_{4}^{⊝} + S_{2} O_{3}^{2 -} \to M n O_{2} + S O_{4}^{2 -}

(Molecular weight of

K_{2} S_{2} O_{3} = 190, K_{2} C r_{2} O_{7} = 294, K M n O_{4} = 158,

I_{2} = 254 g

m o l^{- 1}

Which of the following statements is/are correct?

M n O_{4}^{⊝} + S_{2} O_{3}^{2 -} \to p H = 7 M n O_{2} + H S O_{4}^{⊝}

n

M n O_{4}^{⊝}

S_{2} O_{3}^{2 -}

ions respectively are

3

8

.

Match the following:

$\begin{matrix} C o m p o u n d s & C o o r d i n a t i o n (A : B) (1) Z n S & (i) 8 : 8 (2) C s C l & (i i) 6 : 6 (3) N a C l & (i i i) 4 : 4 (4) N a_{2} O & (i v) 8 : 4 (5) C a F_{2} & (v) 4 : 8 \end{matrix}$

Q. The oxidation of iodide ion by perdisulphate ion is described as follows :

I^{⊝} + S_{2} O_{8}^{2 -} \to I_{3}^{⊝} + S O_{4}^{2 -}

If the rate disappearance of

S_{2} O_{8}^{2 -}

1.5 \times 10^{- 3} M s^{- 1}

, the rate of formation of

S O_{4}^{2 -}

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