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Chemical Process Calculations (Chem Eng Question) Assume the combustion of Butane (C4H10) in air to be complete. a)...

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Chemistry

Chemical Process Calculations (Chem Eng Question)

Assume the combustion of Butane (C4H10) in air to becomplete.

a) Use a degree-of-freedom analysis to prove that if theprecentage excess air and the percentage conversion of butane arespecified, the molar composition of the product gas can bedetermined.

(b) Calculate the molar composition of the product gas for eachof the following three cases:

i) theorectical aire supplied, 100% conversion of butane;

ii) 20% excess air, 100% conversion of butane; and

iii) 20% excess air, 90% conversion of butane.

Answer & Explanation Solved by verified expert
4.4 Ratings (920 Votes)
b The combustion reaction of butane is given as 2 C4H10 13 O2 8 CO2 10 H2O First we calculate the theoretical air supply For the combustion of 1 mol butane 65 mol O2 are needed and 4 mol CO2 5 mol H2O are formed respectively We know that 1 mol of air consist of 021 mol O2 and 079    See Answer
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