Calculate mass of 90% pure Mno, to produce 11.2 L of Cl, at S.T.P from the followi reaction. Mno, + 4HCI - MnCl, + Cl, + 2H,0. A mixture of FeO and Fe, when heated in air to a constant weight, gains 5% weight. Find the composition of the initial mixture.
Answers
Answer:
Total weight of mixture =100 g
FeO=x,Fe3O4=100−x
constant weight on heating=105 g
It implies chemically, the conversion of:
2 moles2FeO⟶1 moleFe2O3
and Fe3O4⟶23Fe2O3
xgFeO=72xmol⇒72x×21molFe2O3
=72×2x×100gofFe2O3=910x
(100−x)gFe3O4=232(10
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