JEE Main 2026 — Redox Reactions Question with Solution
JEE Main 2026 (23 January Shift 2)
Question
200 cc of potassium dichromate is required to oxidise 750 cc of 0.6 M Mohr's salt solution in acidic medium. Here .
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Show full solutionCorrect answer: 375
Correct answer
375
Step-by-step explanation
Mohr's salt () is a source of ions.
The redox reaction with potassium dichromate in acidic medium is:
.
Moles of from Mohr's salt solution:
.
From the stoichiometry, 6 moles of require 1 mole of .
Moles of required:
.
Molarity of potassium dichromate:
.
Therefore, .
The redox reaction with potassium dichromate in acidic medium is:
.
Moles of from Mohr's salt solution:
.
From the stoichiometry, 6 moles of require 1 mole of .
Moles of required:
.
Molarity of potassium dichromate:
.
Therefore, .
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