Question

Wine goes bad soon after opening because the ethanol in it reacts with oxygen gas from the air to form water and acetic acid , the main ingredient of vinegar. What mass of acetic acid is produced by the reaction of of oxygen gas? Round your answer to significant digits.

Answer 1

Answer:

7.00 g

Explanation:

There is some information missing. I think this is the complete question:

Wine goes bad soon after opening because the ethanol CH₃CH₂OH in it reacts with oxygen gas O₂ from the air to form water H₂O and acetic acid CH₃COOH, the main ingredient of vinegar. What mass of ethanol is consumed by the reaction of 4.86g of oxygen gas? Round your answer to 3 significant digits.

First, we have to write the balanced equation.

CH₃CH₂OH + O₂ ⇒  CH₃COOH + H₂O

Then, we can establish the following relations:

• The molar mass of O₂ is 32.0 g/mol
• The molar ratio of O₂ to CH₃CH₂OH is 1:1
• The molar mass of ethanol is 46.1 g/mol.

The mass of ethanol that reacts with 4.86 g of oxygen is:

$4.86gO_{2}.\frac{1molO_{2}}{32.0gO_{2}} .\frac{1molEt}{1molO_{2}} .\frac{46.1gEt}{1molEt} =7.00gEt$