Advertisements
Advertisements
Question
Give the mathematical expression that relates gas volume and moles.
Advertisements
Solution
- The mathematical relationship betwêen the volume of a gas and the number of moles is V α n
- `"V"_1/"n"_1 = "V"_2/"n"_2` = Constant
Where V1 and n1 are the volume and number of moles of a gas and V2 and n2 are the values of volume and number of moles of the same gas at a different set of conditions. - If the volume of the gas increase then the number of moles of the gas also increases.
- At a certain temperature and pressure, the volume of a gas is directly proportional to the number of moles of the gas.
APPEARS IN
RELATED QUESTIONS
State the following:
The absolute temperature of a gas at 7°C
Convert the following pressure value into Pascals.
1 atmosphere
Convert 101.325 kPa to bar.
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.

Solve the following.
A syringe has a volume of 10.0 cm3 at pressure 1 atm. If you plug the end so that no gas can escape and push the plunger down, what must be the final volume to change the pressure to 3.5 atm?

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
State Boyle's law.
Of two samples of nitrogen gas, sample A contains 1.5 moles of nitrogen in a vessel of the volume of 37.6 dm3 at 298 K, and sample B is in a vessel of volume 16.5 dm3 at 298 K. Calculate the number of moles in sample B.
At 25°C and 1 atm, a cylinder containing 10 L of an ideal gas is connected to the empty cylinder with a capacity of 20 L. The pressures exerted by gas m both the cylinders will be ____________.
If 300 mL of a gas at 26.85°C is cooled to 6.85°C at constant pressure. What will be the final volume of gas?
