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salantis [7]
3 years ago
9

If 85.0 grams of ethanol reacts, how many grams of carbon dioxide are produced?

Chemistry
1 answer:
Alenkinab [10]3 years ago
6 0

Answer:

162.4g of CO2 are produced

Explanation:

The combustion of ethanol, C2H5OH, occurs as follows:

2C2H5OH + 7O2 → 4CO2 + 6H2O

<em>Where 2 moles of C2H5OH produce 4 moles of CO2.</em>

<em />

To solve this question we need to convert the mass of ethanol to moles. Then, the moles of ethanol to moles of CO2 using the balanced reaction and to mass:

<em>Moles C2H5OH -Molar mass: 46.07g/mol-</em>

85.0g * (1mol / 46.07g) = 1.845 moles C2H5OH

<em>Moles CO2:</em>

1.845 moles C2H5OH * (4mol CO2 / 2mol C2H5OH) = 3.69 moles CO2

<em>Mass CO2-Molar mass: 44.01g/mol-:</em>

3.69 moles CO2 * (44.01g/mol) =

<h3>162.4g of CO2 are produced</h3>
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