Explain the physical significance of Van der Waals parameters.
Physical significance of ‘a’:
‘a’ is a measure of the magnitude of intermolecular attractive forces within a gas.
Physical significance of ‘b’:
‘b’ is a measure of the volume of a gas molecule.
1. The substance most commonly used as a food preservative is
2. Impure camphor is purified by
3. The gas used to extinguish fire is
5. Which of the following type of coal has the lowest proportion of volatile matter ?
6. Which one of the following metals is used to galvanise iron ?
8. Question 9.30:The oxidation number of cobalt in K[Co(CO)4] is(i) 1(ii) 3(iii) −1(iv) −3
9. Water gas is the mixture of
10. The ‘Green House effect’ is produced due to the presence of excess amount of