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4.5 ×10^-3 mole of a solution containing an ion AO3^-n require 1.5×10^-3 mole Cr2O7^-2 for the oxidation of AO3^-n to AO4^-3 in acid medium . What is the value of n??

4.5 ×10^-3 mole of a solution containing an ion AO3^-n require 1.5×10^-3 mole Cr2O7^-2 for the oxidation of AO3^-n to AO4^-3 in acid medium .  What is the value of n??

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Grade:8

1 Answers

U S Ray
13 Points
4 years ago
1.5×10^-3 x 6 4.5 ×10^-3 x n =
because, In acidic medium, Cr2O72- + 14H+ + 6e = 2Cr3+ + 7H2 O
So, the value of n = 2

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