Question

How do you convert between moles and liters?

Answer 1

Hint: Moles cannot be directly converted into liters as moles is the number of substances and liter is the volume that a substance occupies. We can use the formula where the terms for moles of solute and volume of solution is given.

Complete step by step answer:
The mole is defined as the mass of the substance which contains $6.023 \times {10^{23}}$ particles of the substance.
The mole is the SI unit for the amount of the substance. The mole is denoted by the symbol mol.
The mole of any solute is calculated, the mass is given by dividing the mass by the molecular weight where the molecular weight can be calculated.
The formula to calculate moles is shown below.
$n = \dfrac{m}{M}$
Where,
n is the number of moles
m is the mass
M is the molar mass
The liter is the unit used for the volume of solution.
The relation between the moles of solute and volume (Liters) is seen in molarity.
The molarity is defined as the concentration of solute in solution. Here the number of moles of solute is dissolved in one liter of solution. When one mole of solute is dissolved in one liter solution then one molar solution is formed. The molarity is denoted by “M”.
The formula of molarity is shown below.
$M = \dfrac{n}{V}$
Where,
M is the molarity
n is the number of moles
V is the volume
So, the formula of molarity is used to convert between moles and liters.

Note: The formula of density can also be used as density is equal to mass divided by volume. The moles can be determined from the mass of solute by dividing the mass with the molecular weight.