Advertisements
Advertisements
प्रश्न
Why does water show high boiling point as compared to hydrogen sulphide? Give reasons for your answer.
Advertisements
उत्तर
Because of hydrogen bonding water has a higher boiling point than \[\ce{H2S}\] as in \[\ce{H2S}\] hydrogen bonding is absent.
APPEARS IN
संबंधित प्रश्न
Describe the usefulness of water in biosphere and biological systems.
What properties of water make it useful as a solvent? What types of compound can it (i) dissolve, and (ii) hydrolyse?
Why is it said that-
Water is a universal solvent.
State whether the following statement is true or false.
The substance in which a solute dissolves is called a solvent.
Why should a glass bottle completely filled with water never be kept in a freezer?
Define the following.
Freezing point
Define the following.
Boiling point
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.
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.
How will you account for 104.5° bond angle in water?
Freezing of water will cause an ______ is the volume.
______ has the highest latent heat of fusion.
Water is circulated around the car engine using the ______ pump and the heat is absorbed.
Which of the following ion is responsible for the temporary hardness of 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.
