Advertisements
Advertisements
प्रश्न
State Charles's law.
Advertisements
उत्तर
Charles's Law
At constant pressure, the volume of a given mass of a dry gas increases or decreases by 1/273rd of its original volume at 0°C for each degree centigrade rise or fall in temperature.
V ∝ T (at constant pressure)
At temperature T1 (K) and volume V1 (cm3):
`"V"_1 ∝ "T"_1 "or" "V"_1/"T"_1 = "K"` = constant...(i)
At temperature T2 (K) and volume V2 (cm3):
`"V"_2 ∝ "T"_2 "or" "V"_2/"T"_2 = "K"` = constant….(ii)
From (i) and (ii),
`"V"_1/"T"_1 = "V"_2/"T"_2` = constant
For Temperature = Conversion from Celsius to Kelvin
1 K = °C + 273
Example:
20°C = 20 + 273 = 293 K
APPEARS IN
संबंधित प्रश्न
Give the assumptions of the kinetic molecular theory.
Explain Charles's law on the basis of the kinetic theory of matter.
State the law which is represented by the following graph:
Give reasons for the following:
Mountaineers carry oxygen cylinders with them.
2500 cm3 of hydrogen is taken at STP. The pressure of this gas is further increased by two and a half times (temperature remaining constant). What volume will hydrogen occupy now?
An LPG cylinder can withstand a pressure of 14.9 atmospheres. The pressure gauge of the cylinder indicates 12 atmospheres at 27°C. Because of a sudden fire in the building, the temperature rises. At what temperature will the cylinder explode?
Give its
(i) graphical representation,
(ii) mathematical expression
(iii) significance
A certain mass of gas occupied 850 ml at a pressure of 760 mm of Hg. On increasing the pressure it was found that the volume of the gas was 75% of its initial value. Assuming constant temperature, find the final pressure of the gas?
It is required to reduce the volume of a gas by 20% by compressing it at a constant pressure. To do so, the gas has to be cooled. If the gas attains a final temperature of 157°C, find the initial temperature of the gas.
According to Charles’s law, at constant pressure, the temperature is inversely proportional to volume.
