Answer to Question #273412 in Organic Chemistry for mia

Organic Chemistry

Question #273412

An excess of dilute sulphuric acid reacts with 20 g of impure iron. The following reaction occurs:

Fe + H2SO4 → FeSO4 + H2

In the reaction which occurs, 5,6 dm3 of hydrogen gas is liberated at STP. Calculate the percentage purity of the iron.

Expert's answer

Molar mass of Fe= 55.85

= 5.6/55.85=10.02%

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