161 Sol do

Dear student,

No. of equivalents of kmno4 = no. of equivalents of fec2o4
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Equiv. of kmno4 =n-factor × no. of moles= 5× x.

Equivalents of fec2o4= 3×1=3

5 × x=3
x=3/5 = 0.6 mol
Hence, the number of moles of kmno4 is 0.6 mol.

regards