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Ethanol, C(2)H(5)OH, is the substance co...

Ethanol, `C_(2)H_(5)OH`, is the substance commonly called "alcohol". The density of liquid ethanol is 0.789 g `mL^(-1)` at `20^(@)C`. If 1.2 moles of ethanol are needed for a particular experiment, what volume of ethanol should be measured out?

A

55 mL

B

58 mL

C

70 mL

D

79 mL

Text Solution

Verified by Experts

The correct Answer is:
C
1.2 mol ethanol
`= 1.2 molxx((46g)/(mol))xx((1mL)/(0.789g))`
`= 69.96mL ~~70 mL`
(Molar mass of ethanol, `C_(2)H_(5)OH = 46 g mol^(-1)`
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