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Grade: 11
        2.68 × 10 3 moles of a solution containing an ion An+ require 1.61 × 10-3 moles of 〖MnO〗_4^-  for the oxidation of An+ to A O_3^- in acidic medium. What is the value of n ?
5 years ago

Answers : (1)

Navjyot Kalra
askIITians Faculty
654 Points
							Sol. For the oxidation of An+ as :
   An+ → 〖AO〗_3^- n-factor = 5 – n
⇒ Gram equivalent of An+ = 2.68 × 10-3 (5 - n)
Now equating the above gram equivalent with gram equivalent of KMnO4 :
2.68 × 10-3 (5 - n) = 1.61 × 10-3 × 5
⇒ n = + 2

						
5 years ago
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