One litre of an acidified solution of KMnO4 containing 15.8 g KMnO, is decolorised bypassing sufficient amount of SO2. If so, isproduced by roasting of iron pyrite (FeS 2).The amount of pyrite required to produce thenecessary amount of so, will be(a) 15.8 g Fesz (b) 15.0 g Fes(c) 7.5 g Fesz(d) 7.9 g FeszIf an e is revolving in the first bohr orbit of

One litre of an acidified solution of KMnO4 containing 15.8 g KMnO,

1.	One litre of an acidified solution of KMnO4 containing 15.8 g KMnO, is decolorised bypassing sufficient amount of SO2. If so, isproduced by roasting of iron pyrite (FeS 2).The amount of pyrite required to produce thenecessary amount of so, will be(a) 15.8 g Fesz (b) 15.0 g Fes(c) 7.5 g Fesz(d) 7.9 g FeszIf an e is revolving in the first bohr orbit of
Answer» REACTION for the ROASTING of FeS 2 is as follows:4×1204FeS 2 +11O 2→2F O 3 + 8×648SO 2 Equivalents of KMnO 4=31.615.1 L=0.5 eq. of KMnO 4 =0.5eq of SO 2 =0.5× 264g of SO 2=16 G of SO 2 8×64 g of SO 2 is produced from 2×120 g of FeS 2 . (from the equation above)∴16 g of SO 2 is produced from 8×644×120 ×64=15g