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Standard XII
Chemistry
Question

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]

  1. 0.39g
  2. 0.37g
  3. 22.05g
  4. 2.2 g

A
22.05g
B
2.2 g
C
0.37g
D
0.39g
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Solution
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Amount of Mohr's salt oxidized is 0.75mL×0.6mol/l=0.45mol

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