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Question

Number of K+ ions and number of moles of K+ ions present in 1L of N5KMnO4 solution respectively, in acidic medium are :

A
0.04 and 2.4×1022
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B
2.4×1022 and 0.04
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C
200 and 6.023×1023
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D
6.023×1023 and 200
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Solution

The correct option is B 2.4×1022 and 0.04
Number of moles in one litre of N5KMnO4 solution =Normalitynf=15×5=125=0.04 mol.
So, no. of moles of K+=0.04 mol and number of K+=NA×0.04=2.4×1022.

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