The reaction of potassium permanganate VII with acidified ironII sulphate is given below-2 KMnO 4-10 FeSO 4-8 H 2 SO 4- K 2 SO 4-2 MnSO 4-5 Fe 2 SO 43-8 H 2 OIf 15-8 g of potassium permanganateVII was used in the reaction- calculate the mass of iron II sulphate used in the above reaction- K -39- Mn -55- Fe -56- S -32- O -16A- 46 gB- 62 gC- 76 gD- 54 gE- 82 g

The correct option is C 76 g ...

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Standard X

Chemistry

Conservation of Mass

The reaction ...

Question

The reaction of potassium permanganate (VII) with acidified iron(II) sulphate is given below:

If 15.8 g of potassium permanganate(VII) was used in the reaction, calculate the mass of iron (II) sulphate used in the above reaction. (K = 39, Mn = 55, Fe = 56, S = 32, O = 16)

46 g

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54 g

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62 g

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76 g

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82 g

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Solution

The correct option is D
76 g

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Q. The reaction of potassium permanganate with acidified iron [II] sulphate is given below :-

2 K M n O_{4} + 10 F e S O_{4} + 8 H_{2} S O_{4} \to K_{2} S O_{4} + 2 M n S O_{4} + 5 F e_{2} (S O_{4})_{3} + 8 H_{2} O

15.8

g of potassium permanganate was used in the reaction, calculate the mass of iron [II] sulphate used in the above reaction.
[Molecular Weight of

K = 39, M n = 55, F e = 56, S = 32, O = 16

g/mole]

(a) A flask contains 3.2 g of sulphur dioxide. Calculate the following:
(i) The moles of sulphur dioxide present in the flask.
(ii) The number of molecules of sulphur dioxide present in the flask.
(iii) The volume occupied by 3.2 g of sulphur dioxide at STP. (S = 32, O = 16)

(b) The reaction of potassium permanganate (VII) with acidified iron (II) sulphate is given below:
2KMnO₄ + 10FeSO₄ + 8H₂SO₄ $\overset{}{\to}$ K₂SO₄ + 2MnSO₄ + 5Fe₂(SO₄)₃ + 8H₂O
If 15.8 g of potassium permanganate (VII) was used in the reaction, calculate the mass of iron (II) sulphate used in the above reaction. (K = 39, Mn = 55, Fe = 56, S = 32, O = 16)

Q. The reaction, is an example of reaction of:

2 M n S O_{4} + 2 K M n O_{4} + 8 H_{2} S O_{4} \to 2 M n S O_{4} + 5 F e_{2} (S O_{4})_{3} + K_{2} S O_{4} + 8 H_{2} O

Q. Identify the correctly balanced redox reaction using ion-electron method.

F e S O_{4} + K M n O_{4} + H_{2} S O_{4} \to F e_{2} (S O_{4})_{3} + M n S O_{4} + H_{2} O + K_{2} S O_{4}

Q. Paragraph for below question

नीचे दिए गए प्रश्न के लिए अनुच्छेद

11.85 g KMnO₄ is dissolved in one litre of dil. H₂SO₄. To this solution, sufficient SO₂ gas is passed just to decolourise the purple colour of KMnO₄ solution.

2KMnO₄ + 5SO₂ + 2H₂O → K₂SO₄ + 2MnSO₄ + 2H₂SO₄

The SO₂ gas used in the above reaction is produced by oxidation of iron pyrites (FeS₂) as per the following reaction

4FeS₂(s) + 11O₂(g) → 2Fe₂O₃(s) + 8SO₂(g)

11.85 g KMnO₄ को एक लीटर तनु H₂SO₄ में घोला गया है। इस विलयन में, KMnO₄ विलयन के बैंगनी रंग को विरंजित करने के लिए पर्याप्त SO₂ गैस प्रवाहित की जाती है।

2KMnO₄ + 5SO₂ + 2H₂O → K₂SO₄ + 2MnSO₄ + 2H₂SO₄

उपरोक्त अभिक्रिया में प्रयुक्त SO₂ गैस को निम्नलिखित अभिक्रिया के अनुसार आयरन पाइराइट (FeS₂) के ऑक्सीकरण द्वारा प्राप्त किया जाता है।

4FeS₂(s) + 11O₂(g) → 2Fe₂O₃(s) + 8SO₂(g)

Q. What is the minimum mass of iron pyrites required in the above reaction?

[Atomic mass in u : O = 16, S = 32, K = 39, Mn = 55, Fe = 56]

प्रश्न - उपरोक्त अभिक्रिया में आवश्यक आयरन पाइराइट का न्यूनतम द्रव्यमान क्या है?

[u में परमाणु द्रव्यमान : O = 16, S = 32, K = 39, Mn = 55, Fe = 56]

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The reaction of potassium permanganate (VII) with acidified iron(II) sulphate is given below: If 15.8 g of potassium permanganate(VII) was used in the reaction, calculate the mass of iron (II) sulphate used in the above reaction. (K = 39, Mn = 55, Fe = 56, S = 32, O = 16)

The correct option is D 76 g

The reaction of potassium permanganate (VII) with acidified iron(II) sulphate is given below:

If 15.8 g of potassium permanganate(VII) was used in the reaction, calculate the mass of iron (II) sulphate used in the above reaction. (K = 39, Mn = 55, Fe = 56, S = 32, O = 16)

The correct option is D
76 g