Wine goes bad soon after opening because the ethanol (CH3CH2OH) in it reacts wit

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 6.94 of oxygen gas?

Wine goes bad soon after opening because the ethanol (CH CH2OH) in it reacts with oxygen gas (O2) from the air to form tr (HO and acetic acid (CH COOH), the main ingredient of vinegar. What mass of ethanol is consumed by the reaction of 6.94 g of oxygen gas? Be sure your answer has the correct number of significant digits.

Explanation / Answer

C2H5OH + O2 = CH3COOH + H2O (balance reaction)

1 mole of ethanol is reacting with 1 mole of O2

mole of O2 = mass / molar mass

= 6.94 / 32

0.2169 moles

so mole of ethanol = mole of O2 = 0.2169

mass of ethanol = mole * molar mass

= 0.2169 * 46

= 9.9774 grams

answer = 9.98 grams

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