1. Calculate the molarity of the ethanol in the undiluted

1. Calculate the molarity of the ethanol in the undiluted vodka sample. As in the lab procedure, the original (undiluted) vodka was diluted 1/40

2. Calculate the mass of ethanol (CH33CH22OH) in a litre of vodka.

3. Given that the density of ethanol (CH33CH22OH) is 0.789 g⋅mL−1−1, convert the mass of ethanol into a volume of ethanol in a litre of vodka.

4. When 2 miscible liquids are mixed, very seldom does the final volume equal the combined volumes of the individual liquids. The 2 liquids solvate each other and the final volume is almost always less. This is called non-ideal behaviour. Since ethanol and water are infinitely miscible, vodka is an example of a non-ideal solution and the volume of ethanol is determined by multiplying by
976 mL/1000mL.
What is the corrected volume of ethanol in 1 liter of vodka?

5. Report the % ethanol (v/v) in the vodka sample.

% ethanol (v/v) = (volume of ethanol in mL / 1000 mL) x 100 %

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