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.
How did Charles's law lead to the concept of an absolute scale of temperature?
State the following:
Ice point in absolute temperature
2 liters of gas is enclosed in a vessel at a pressure of 760 mmHg. If the temperature remains constant, calculate pressure when volume changes to 4 dm3.
It is found that on heating a gas its volume increases by 50% and its pressure decreases to 60% of its original value. If the original temperature was −15°C, find the temperature to which it was heated.
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?
At a given temperature the pressure of a gas reduces to 75% of its initial value and the volume increases by 40% of its initial value. Find this temperature if the initial temperature was -10°C.
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.
A fixed volume of a gas occupies 760cm3 at 27°C and 70 cm of Hg. What will be its vol. at s.t.p.
The following question refers to one mole of chlorine gas.
What volume will it occupy at 273°C?
