Advertisements
Advertisements
Question
A sample of gas at 15°C at 1 atm. has a volume of 2.58 dm3. When the temperature is raised to 38°C at 1 atm does the volume of the gas Increase? If so, calculate the final volume.
Advertisements
Solution
T1 = 15°C + 273
T2 = 38°C + 273
T1 = 228 K
T2 = 311 K
V1 = 2.58 dm3
V2 = ?
(P = 1 atom constant)
`"V"_1/"T"_1 = "V"_2/"T"_2`
V2 = `("V"_1/"T"_1)` × T2
= `(2.58 "dm"^3)/(288 "K") xx 311 "K"`
V2 = 2.78 dm3
i.e, volume increased from 2.58 dm3 to 2.78 dm3
APPEARS IN
RELATED QUESTIONS
Explain Why?
"When stating the volume of a gas, the pressure and temperature should also be given."
Give reason for the following:
Gases exert pressure in all directions.
Convert the following pressure value into Pascals.
10 atmosphere
Hot air balloons float in the air because of the low density of the air inside the balloon. Explain this with the help of an appropriate gas law.
Identify the gas laws from the following diagram.
| Diagram | Gas laws |
 |
______________ |
Consider a sample of a gas in a cylinder with a movable piston.
Show diagrammatically the changes in the position of the piston, if the temperature is decreased from 400 K to 300 K, and pressure is decreased from 4 bar to 3 bar.
Write the statement for Boyle’s law
Assertion: Critical temperature of CO2 is 304 K, it can be liquefied above 304 K.
Reason: For a given mass of gas, volume is to directly proportional to pressure at constant temperature
Explain the following observation.
The type of an automobile is inflated to slightly lesser pressure in summer than in winter
The number of molecules in 8.96 litres of gas at 0°C and 1 atm. pressure is approximately ______.
