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Conformational Isomerism

how many litr...

Question

how many litres of oxygen at STP is required to burn 60 g of C2H6 ?

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Solution

$C_{2} H_{6} + \frac{7}{2} O_{2} \to 2 C O_{2} + 3 H_{2} O 30 g o f e t h a n e n e e d s \frac{7}{2} = 3.5 m o l e s o f O_{2} 1 m o l e o f a n y g a s o c c u p i e s 22.4 L 3.5 m o l e s o c c u p y = 3.5 \times 22.4 = 78.4 L F o r 60 g o f e t h a n e n e e d \frac{78.4}{30} \times 60 = 156.8 L o f o x y g e n$

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