Some of the physical properties of H2O and D2O are as follows:
Property | H2O | D2O |
Density at 20°C (g/ml) | 0.997 | 1.108 |
Boiling point (°C) | 100.00 | 101.41 |
Melting point (°C) | 0.00 | 3.79 |
∆H°vap(kJ/mol) | 40.7 | 41.61 |
∆H°fus (kJ/mol) | 6.02 | 6.3 |
Account for the differences. (Note: D is a symbol often used for 2H, the deuterium isotope of hydrogen.)
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