Advertisements
Advertisements
प्रश्न
Some of the properties of water are described below. Which of them is/are not correct?
(i) Water is known to be a universal solvent.
(ii) Hydrogen bonding is present to a large extent in liquid water.
(iii) There is no hydrogen bonding in the frozen state of water.
(iv) Frozen water is heavier than liquid water.
Advertisements
उत्तर
(iii) There is no hydrogen bonding in the frozen state of water.
(iv) Frozen water is heavier than liquid water.
Explanation:
The presence of extensive hydrogen bonding between water molecules gives it remarkable features in the condensed phase (liquid and solid phases). In comparison to \[\ce{H2S}\] and \[\ce{H2Se}\], this results in a high freezing point, high boiling point, high heat of vaporisation, and high heat of fusion.
APPEARS IN
संबंधित प्रश्न
Among NH3, H2O and HF, which would you expect to have highest magnitude of hydrogen bonding and why?
Sea water is a bad conductor of electricity.
Explain the picture in your own words.
Why is the density of seawater more than that of rain water?
Give reasons: Lakes freeze from top towards bottom.
Give reasons: Ice floats on water.
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 freezing point of water ______ with an increase in pressure.
Water is circulated around the car engine using the ______ pump and the heat is absorbed.
What is the taste of distilled water & boiled water?
What are the physical properties of pure water?
The density of gold is 19 g/cm3. If 1.9 × 10−4 g of gold is dispersed in one litre of water to give a sol having spherical gold particles of radius 10 nm, the number of gold particles per mm3 of the sol will be ______ × 106.
The water having more dissolved O2 is ______.
