Advertisements
Advertisements
प्रश्न
Define the following.
Freezing point
उत्तर
The temperature at which a liquid turns into solid when cooled is known as the freezing point. The freezing point of water is 0°C.
APPEARS IN
संबंधित प्रश्न
Among NH3, H2O and HF, which would you expect to have highest magnitude of hydrogen bonding and why?
Melting point, enthalpy of vapourisation and viscosity data of \[\ce{H2O}\] and \[\ce{D2O}\] is given below :
| \[\ce{H, O}\] | \[\ce{D2O}\] | |
| Melting point / K | 373.0 | 374.4 |
| Enthalpy of vapourisation at (373 K)/kJ mol–1 | 40.66 | 41.61 |
| Viscosity/centipoise | 0.8903 | 1.107 |
On the basis of this data explain in which of these liquids intermolecular forces are stronger?
Explain why \[\ce{HCl}\] is a gas and \[\ce{HF}\] is a liquid.
Write two reactions to explain amphoteric nature of water.
The boiling point of water increases with ______ in pressure.
The freezing point of water ______ with an increase in pressure.
Freezing of water will cause an ______ is the volume.
Water is circulated around the car engine using the ______ pump and the heat is absorbed.
What are the physical properties of pure water?
The water having more dissolved O2 is ______.
