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pH of Salts

Consider a ti...

Question

Consider a titration of potassium dichromate solution with acidified Mohr's salt solution using diphenyl-amine as indicator. The number of moles of Mohr's slat required per mole of dichromate is:

A

3

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B

4

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C

5

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D

6

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Solution

The correct option is D $6$
$6 (N H_{4})_{2} F e (S O_{4})_{2} + K_{2} C r_{2} O_{7} + 7 H_{2} S O_{4} \to 6 (N H_{4}) F e (S O_{4})_{2} + K_{2} S O_{4} + C r_{2} (S O_{4})_{3} + 3 (N H_{4})_{2} S O_{4} + 7 H_{2} O$

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Similar questions

Q. Consider a titration of potassium dichromate solution with acidified Mohr's salt solution using diphenylamine as indicator. The number of moles of Mohr's salt required per mole of dichromate is:

Q. Consider a titration of potassium dichromate solution with acidified Mohr's salt solution using diphenylamine as indicator. The number of moles of Mohr's salt required per mole of dichromate is:
(The formula for Mohr's salt is

F e S O_{4} . (N H_{4})_{2} S O_{4} .6 H_{2} O

)

Q. Consider the titration of potassium dichromate solution with acidified Mohr's salt solution using diphenylamine as the indicator. The number of

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Q. The mass of potassium dichromate crystals required to oxidise 750 cm

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[Given, molar mass, potassium dichromate = 294, Mohr's salt = 392]

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

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