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The volume of ethyl alcohol (density 1.1...

The volume of ethyl alcohol (density 1.15g/cc) that has to be added to prepare 100cc of 0.5 M ethyle alcohol solution in water is-

A

1.15 cc

B

2cc

C

2.15cc

D

2.30 cc

Text Solution

Verified by Experts

The correct Answer is:
B
Mass of `C_(2)H_(5)OH` in 1000 cc 0.5 (M) solution
`=0.5xx46g` [molecular mss of `C_(2)H_(5)OH=46`]
`therefore`Mass of `C_(2)H_(5)OH` in 100cc 0.5 `(M)=(0.5xx46xx100)/(1000)g`
`therefore` Vol. of `C_(2)H_(5)OH` in 100cc 0.5 `(M)=(23)/(1.15)=2` cc
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