Question

Problem 1 (10 pts) Ethanol (C2H60) is produced from agricultural crops and is often added to gasoline. This decreases the amount of crude oil that must be imported and reduces the exhaust emissions. Ethanol combines with O2 in a combustion reaction to produce CO2 and H20. a) Write a balanced chemical equation for the complete combustion of ethanol. b) Determine the mass of Oz (in grams) consumed if 200 g of ethanol are ignited. Show all your work.

Answer 1

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soln :- (a) chemical equation for complete combustion of ethano: C₂ HGO + 302 (ethanol) 2 CO + 3 H₂O (6) molecular weight of H60 = 46 gm. molecular weight of 302 = 96 9m D since 96 qm of Og required for combustion of 46 gm of ethanol. so oxygen (Os) required for combustion of 200 gm ethanol = 96 x 200 gm = [417. 391 gm 46 Aur