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  4. The mass of potassium dichromate crystals required to oxidise 750 cm3 of 0.6 M Mohr's salt solution is: (Given molar mass potassium dichromate = 294, Mohr's salt = 392)

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Q. The mass of potassium dichromate crystals required to oxidise $750\, cm^3$ of 0.6 M Mohr's salt solution is :
(Given molar mass potassium dichromate = 294, Mohr's salt = 392)

AIEEEAIEEE 2011

Solution:

$0.6\times0.75\times1 = \frac{w}{294}\times6$
$w = 22.05\, g$