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xFeS2 + yO2 -> zFe2O3 + wSO2, what is the value of x + y + z + w?

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xFeS2 + yO2 -> zFe2O3 + wSO2, what is the value of x + y + z + w?

(a) 16

(b) 21

(c) 25

(d) 32

The question was asked in homework.

The query is from Stoichiometry in section The Chemical Reaction Equation & Stoichometry, Material Balances for Processes Involving Reaction and Multiple Units of Basic Chemical Engineering

1 Answer

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Correct option is (c) 25

The best explanation: The balanced chemical reaction is 4FeS2 + 11O2 -> 2Fe2O3 + 8SO2, => x + y + z + w = 25.

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