8. wine \"sours\" when ethanol (C 2 H 5 OH) is oxidized and tnd converted to ace

Question

8. wine "sours" when ethanol (C2H5OH) is oxidized and tnd converted to acetic acid (also known as vinegar). This reaction proceeds as follows

if 2.00 g of ethanol and 1.00 g of oxygen are sealed in a wine bottle, which is the limiting reactant?

5. A method used by the EPA for determining the ozone concentration in the air is to pass an air sample through a bubbler containing iodide ions. The iodide ions remove the ozone according to the following reaction:

What is the mass in grams of ozone that can be removed from the air by reaction with 1.76 moles of iodide ions?

Explanation / Answer

8) Moles of ethanol = 2/46 = 0.0434

Moles of oxygen = 1/32 = 0.0312

Here number of moles of oxygen is less than number of moles of ethanol. So, Oxygen is the limiting reactant.

5) This is a 1:2 mole ratio reaction betwerb ozone and iodide ions.

1.76 moles of iodide can be reached with 0.88 moles of ozone.

Mass of ozone reacted with iodide = 0.88*molar mass of O3

= 0.88*48 = 42.24g

Mass of ozone removed = 42.24g

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