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 $ .
