SATHEE: Some Basic Concepts Of Chemistry Question 74

Some Basic Concepts Of Chemistry Question 74

Question: Number of moles of $K M n O_{4}$ required to oxidize one mole of $F e (C_{2} O_{4})$ in acidic medium is

Options:

A) 0.167

B) 0.6

C) 0.2

D) 0.4

Show Answer

Answer:

Correct Answer: B

Solution:

[b] The required equation is $2 K M n O_{4} + 3 H_{2} S O_{4} \overset{}{\to}$ $K_{2} S O_{4} + 2 M n S O_{4} + 3 H_{2} O + \underset{n a s c e n t o x y g e n}{5 [O]},$

$2 F e (C_{2} O_{4}) + 3 H_{2} S O_{4} + 3 [O] \overset{}{\to}$ $F e_{2} {(S O_{4})}_{3} + 2 C O_{2} + 3 H_{2} O$

$O$ required for 1 mol. of $F e (C_{2} O_{4})$ is 1.5,5 $O$ are obtained from 2 moles of $K M n O_{4}$

$∴ 1.5 [O]$ will be obtained from $= \frac{2}{5} \times 1.5 = 0.6$ moles of $K M n O_{4}$ .

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Some Basic Concepts Of Chemistry Question 74

Question: Number of moles of KMnO4 required to oxidize one mole of Fe(C2O4) in acidic medium is

Options:

Answer:

Solution:

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Question: Number of moles of $K M n O_{4}$ required to oxidize one mole of $F e (C_{2} O_{4})$ in acidic medium is