The composition of a sample of Wurtztite is Fe0.93O. What is the percentage of iron present as Fe3+ in total iron?
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a
15.05%
b
25%
c
35%
d
45%
answer is A.
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Detailed Solution
Three Fe2+ replaced by two Fe3+total loss of iron =0.07moleSo, mole of Fe3+ present in Fe0.93O=2 x 0.07â´ % of Fe3+ in total iron content=2Ã0.070.93Ã100=15.05