Advertisements
Advertisements
प्रश्न
What is diffusion? Give an example to illustrate it.
Advertisements
उत्तर
Diffusion is the process of gradual mixing of two substances, kept in contact, by molecular motion.
Example:
If a jar of chlorine is opened in a large room, the odorous gas mixes with air and spreads to every part of the room. Although chlorine is heavier than air, it does not remain at the floor level but spreads throughout the room.
APPEARS IN
संबंधित प्रश्न
Molar volume is the volume occupied by 1 mol of any (ideal) gas at standard temperature and pressure (STP: 1 atmospheric pressure, 0 °C). Show that it is 22.4 litres
Three vessels of equal capacity have gases at the same temperature and pressure. The first vessel contains neon (monatomic), the second contains chlorine (diatomic), and the third contains uranium hexafluoride (polyatomic).
Is the root mean square speed of molecules the same in the three cases? If not, in which case is vrms the largest?
Give reasons for the following:
Gas fills the vessel completely in which it is kept.
Fill in the blanks:
If the temperature is reduced to half, ………….. would also reduce to half.
Name or state the following:
The absolute temperature value corresponding to 35°C.
Give reason for the following:
Volumes of gases are converted into s.t.p. conditions and then compared.
Gases exert pressure on the walls of the container because the gas molecules ______
The equation of state for 2g of oxygen at a pressure 'P' and temperature 'T', when occupying a volume 'V' will be ______.
Estimate the average thermal energy of a helium atom at room temperature (27 °C).
Cooking gas containers are kept in a lorry moving with uniform speed. The temperature of the gas molecules inside will ______.
