Answer:
75g of FeS2 will produce 80.1g of SO2.
Explanation:
4FeS2 + 11O2 -------> 2Fe2O3 + 8SO2
Step 1: obtain the number of mole to produce the gas SO2
4 moles of FeS2 produces 8 moles of SO2
1 mole of FeS2 will produce 2 moles of SO2
Step 2:
Find the relative molecular mass (RMM) of FeS2 and SO2
(Fe= 55.8, S = 32)
RMM of FeS2= 119.8g/mol
RMM of SO2 = 64g/mol
Step 3:
Equate the RMM into the mole equation
1mole of FeS2 = 2 moles of SO2
119.8g/mol = 64*2= 128g/mol of SO2
75g will produce ( 128 * 75 / 119.8)
= 80.1g
So therefore, 75g of FeS2 will produce 80.1g of SO2.
