Liquid Benzene (C6H6) Bums In Oxygen According To The Equation ...

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4. Liquid benzene (C6H6) bums in oxygen according to the equation, 2C6H6 (I) + 15O2 (g) arrow 12 CO2 (g) + 6H2O(g) How many litres of O2 at STP are needed to complete the combustion of 39 g of liquid benzene? (Mol. weight of O2 = 32, C6H6 = 75)

Q. Liquid benzene (C6​H6​) bums in oxygen according to the equation, 2C6​H6​(I)+15O2​(g)→12CO2​(g)+6H2​O(g) How many litres of O2​ at STP are needed to complete the combustion of 39 g of liquid benzene? (Mol.weightofO2​=32,C6​H6​=75) 7616 263 AIPMTAIPMT 1996Organic Chemistry – Some Basic Principles and Techniques Report Error A

74 L

5% B

11.2 L

13% C

22.4 L

24% D

84 L

58%

Solution:

(d) 2C6​H6​+15O2​(g)→12CO2​(g)+6H2​O(g) =1562×78​=33015×32​ ∴ 156 g of benzene required oxygen =15×22.4L ∴ 1 g of benzene required oxygen =15615×22.4​L ∴ 39 g of benzene required oxygen =15615×22.4×39​ = 84.0 L