At what exact temperature (in degrees Celsius) does ordinary liquid water attain its maximum density before the formation of the open-cage hydrogen-bonded structure causes it to expand as it freezes?

Question

Prashant Kotian · Accepted Answer

Correct answer: 4. Water exhibits anomalous expansion. Its density is maximum at (or ). Below this temperature, it begins to form an open, cage-like structure via hydrogen bonding, which increases its volume and lowers its density until it solidifies at .

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