Question

What is the correct mathematical relationship between the number of moles, the volume, and the standard molar volume of a substance?

Answer 1

n=V/Vm

n - the number of moles
V - the volume
Vm=22.4 L/mol - the standard molar volume of gas

Answer 2

Answer:
`{\text {no of moles}}=\frac{\text {Given volume}}{\text {Standard Molar volume}}`

Explanation:

According to Avogadro's law, 1 mole of every gas occupies 22.4 L of volume at standard temperature and pressure conditions.

Thus Standard molar volume of substance= 22.4 L

To calculate the moles from mass ,we use the formula:

`{\text { no of moles}}=\frac{\text{Given mass}}{\text{Molar mass}}`

To calculate the moles from volume ,we use the formula:

Similarly,
`{\text {no of moles}}=\frac{\text {Given volume}}{\text {Standard Molar volume}}`