Some Basic Concepts Of Chemistry Question 192

Question: A 400 mg iron capsule contains 100 mg of ferrous fumarate, $ {{(CHCOO)}_2}Fe $ . The percentage of iron pasent in it is approximately

Options:

A) 33%

B) 25%

C) 14%

D) 8%

Show Answer

Answer:

Correct Answer: D

Solution:

Molecular weight of $ {{(CHCOO)}_2}Fe=170 $

Fe present in 100mg of $ {{(CHCOO)}_2}Fe $

$ =\frac{56}{170}\times 100mg=32.9mg $

This is present in 400mg of capsule % of Fe in capsule $ =\frac{32.9}{400}\times 100=8.2 $ .



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