Advertisements
Advertisements
प्रश्न
Which of the following gases has maximum rms speed at a given temperature?
विकल्प
hydrogen
nitrogen
oxygen
carbon dioxide.
उत्तर
hydrogen
The rms speed of a gas is given by \[\sqrt{\frac{3RT}{M_o}}\] . Since hydrogen has the lowest Mo compared to other molecules, it will have the highest rms speed.
APPEARS IN
संबंधित प्रश्न
The rms speed of oxygen at room temperature is about 500 m/s. The rms speed of hydrogen at the same temperature is about
The rms speed of oxygen molecules in a gas is v. If the temperature is doubled and the oxygen molecules dissociate into oxygen atoms, the rms speed will become
Find the rms speed of hydrogen molecules in a sample of hydrogen gas at 300 K. Find the temperature at which the rms speed is double the speed calculated in the previous part.
Use R=8.314 JK-1 mol-1
The specific heat capacities of hydrogen at constant volume and at constant pressure are 2.4 cal g−1 °C−1 and 3.4 cal g−1 °C−1 respectively. The molecular weight of hydrogen is 2 g mol−1 and the gas constant, R = 8.3 × 107 erg °C−1 mol−1. Calculate the value of J.
Root mean square velocity of a particle is V at pressure P. If pressure is increased two times, then the rms velocity becomes ______.
The temperature of an ideal gas is increased from 120 K to 480 K. If at 120 K, the root mean square speed of gas molecules is V, then at 480, it will be ______.
A vessel of volume V contains a mixture of 1 mole of Hydrogen and 1 mole of Oxygen (both considered as ideal). Let f1(v)dv, denote the fraction of molecules with speed between v and (v + dv) with f2(v)dv, similarly for oxygen. Then ______.
Consider an ideal gas with following distribution of speeds.
| Speed (m/s) | % of molecules |
| 200 | 10 |
| 400 | 20 |
| 600 | 40 |
| 800 | 20 |
| 1000 | 10 |
Calculate Vrms and hence T. (m = 3.0 × 10−26 kg)
Consider an ideal gas with following distribution of speeds.
| Speed (m/s) | % of molecules |
| 20 | 10 |
| 400 | 20 |
| 600 | 40 |
| 800 | 20 |
| 1000 | 10 |
If all the molecules with speed 1000 m/s escape from the system, calculate new Vrms and hence T.
Consider a mixture of gas molecule of types A, B and C having masses mA < mB < mC ratio of their root mean square speeds at normal temperature and pressure is ______.
The rms speeds of the molecules of Hydrogen, Oxygen, and Carbon dioxide at the same temperature are VH, VO, and `V_{CO_2}` respectively then ______.
The root means the square speed of smoke particles of mass 5 × 10-17 kg in their Brownian motion in air at NTP is approximate.
[Given k = 1.38 × 10-23 JK-1]
What will be the effect on the root mean square velocity of oxygen molecules if the temperature is doubled and the oxygen molecule dissociates into atomic oxygen?
For a given gas at 1 atm pressure, rms speed of the molecules is 200 m/s at 127°C. At 2 atm pressure and at 227°C; the rms speed of the molecules will be ______.
