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why water has maximum density at 4 degree centigrade

Posted by Hrishikesh Boruah 6 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 6 years, 5 months ago

Water has maximum density at 4⁰C because when temperature is increased from o to 4⁰C, some of the H-bonds break and molecules come closer and density increases till 4⁰C because volume decreases. But, above 4⁰C, the kinetic energy of molecules increases which leads to increase in volume and density decreases.

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