Answer to Question #220235 in General Chemistry for Jemima

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 oxygen gas is consumed by the reaction of 2.1g of ethanol?

 

Answer 1

CH₃CH₂OH(g)+O₂(g)$\to$ H₂O(l)+CH₃COOH(l)

moles of ethanol=2.1/46=0.04565moles

Mass of Oxygen=1:1

Mass of Oxygen=32(0.04565)= 1.4609g