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What volume of ethl alcohol and …

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What volume of ethl alcohol and water must be mixed together to prepare 250ml of 60%by volume of alcohol in water

Posted by Prabh Dayal Arora Ix-E 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years, 1 month ago

60% v/v means 60 ml ethanol in 100 ml of solution. Water is 100-60 = 40 ml.

Ethanol to Water ratio is 60/40 = 3/2

Hence in 250 ml solution, 3 parts of 250ml is ethanol and 2 parts of 250ml is water.

In total, 5 parts makes 250. So 1 part is 250/2 = 50 ml.

Hence ethanol needed is 150ml and water 100ml

1Thank You

ANSWER

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CBSE > Class 09 > Science