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olga55 [171]
3 years ago
13

If a car produces 62g of CO2, how many grams of O2 are used up in the reaction?

Chemistry
1 answer:
k0ka [10]3 years ago
5 0

<u>Given:</u>

Amount of CO2 produced = 62 g

<u>To determine:</u>

Amount of O2 consumed

<u>Explanation:</u>

If ethanol (C2H5OH) is the fuel used during combustion then the reaction is:

C2H5OH + 3O2 → 2CO2 + 3H2O

Based on the reaction stoichiometry:

3 moles of O2 will produce 2 moles of CO2

# moles of CO2 produced = 62 g/ 44 g.mol-1 = 1.4091 moles

Therefore,

# moles of O2 consumed = 1.4091 *3/2 = 2.1137 moles

Mass of O2 used up = 2.1137 moles * 32 g/mole = 67.64 g

Ans: The mass of O2 used up during combustion of ethanol would be around 68 g

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Explanation:

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