How does Pressure affect molar mass?

In summary, pressure does not directly affect the molar mass of a substance, as it is a measure of the mass of one mole of a substance and remains constant regardless of changes in pressure. Increasing pressure does not affect the molar mass, but can impact the physical properties of a substance such as density and boiling point. Pressure also does not change the number of moles in a substance, as the amount of the substance remains constant. However, pressure can indirectly affect the molar mass of a gas by changing its volume. There is no direct relationship between pressure and molar mass, but pressure can indirectly impact molar mass calculations by influencing physical properties of a substance.
  • #1
jessicaanne
1
0
Will a higher pressure increase or decrease molar mass when using the ideal gas law, but solving for mm... (mm=mRT/PV)

I was thinking higher pressure would = decrease in molar mass, because of the gas laws and because p=1/v but I am not sure if that's right

thanks!

jessie
 
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  • #2
Molar mass is not a function of pressure. PV=const, when you increase the pressure volume goes down and PV in denominator doesn't change.
 

Related to How does Pressure affect molar mass?

1. How does pressure affect the molar mass of a substance?

Pressure does not directly affect the molar mass of a substance. Molar mass is a measure of the mass of one mole of a substance, and it remains constant regardless of changes in pressure.

2. Does increasing pressure increase or decrease the molar mass?

Increasing pressure does not affect the molar mass of a substance. However, changes in pressure can affect the physical properties of a substance, such as its density and boiling point.

3. Can pressure change the number of moles in a substance?

No, pressure does not change the number of moles in a substance. The number of moles is determined by the amount of the substance, which remains constant regardless of pressure changes.

4. How does pressure affect the molar mass of a gas?

The molar mass of a gas is affected by pressure only in terms of the gas' volume. When pressure is increased, the volume of a gas decreases, which can lead to changes in the molar mass calculations for the gas.

5. What is the relationship between pressure and molar mass?

There is no direct relationship between pressure and molar mass. However, changes in pressure can affect the physical properties of a substance, which can indirectly impact molar mass calculations for that substance.

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