Question

What volume of ethyl alcohol and water must be mixed to prepare 250 ml solution of 80% by volume of alcohol in water? *

(i) 50 ml

(ii) 100 ml

(iii) 150 ml

(iv) 200 ml


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Answer 1

Explanation:

iv) 200ml

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Answer 2

Answer:

$100 \: ml$

Explanation:

$additional \: solution$

60% by volume of alcohol solution means,each 100 ml of solution will have 60 ml ethyl alcohol. hence in a250ml solution of 60% by volume of alchohol and water,alcohol should be 150 ml and water should be 100ml

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