## How does pressure affect molar volume?

According to Boyle’s Law, the volume and pressure of a gas are inversely proportional (as long as temperature remains constant). What this boils down to is: if you increase the volume of a gas, its pressure decreases. If you decrease the volume of a gas, its pressure increases.

## What is the relationship between pressure and molar mass?

Avogadro’s law states that “equal volumes of all gases, at the same temperature and pressure, have the same number of molecules.” For a given mass of an ideal gas, the volume and amount (moles) of the gas are directly proportional if the temperature and pressure are constant.

Is pressure and volume direct or inverse?

Boyle’s Law is a relationship between pressure and volume. In this relationship, pressure and volume have an inverse relationship when temperature is held constant. If there is a decrease in the volume there is less space for molecules to move and therefore they collide more often, increasing the pressure.

### What is the difference between molar volume and standard molar volume?

Summary – STP vs Standard Molar Volume Standard molar volume is the volume of a mole of a substance at STP. The difference between STP and standard molar volume is that STP gives temperature by the unit K (Kelvin) and pressure by Pa (Pascal) whereas standard molar volume is given by L/mol (Liters per mole) unit.

### What does molar volume depend on?

The molar volume of a substance i is defined as its molar mass divided by its density ρi0: .

Does pressure increase with molar mass?

If you have heavier molecules, they would each have more momentum, and would exert more force on the container’s walls—i.e. more pressure.

## Does molar mass and or molar volume change with temperature and pressure?

The molar volumes of all gases are the same when measured at the same temperature and pressure (22.4 L at STP), but the molar masses of different gases will almost always vary.

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