Question

- Explain the following terms
(a) Mole fraction
(b) Molarity
(c) Molality​

Answer 1

Answer:

1. Mole fraction is a unit of concentration, defined to be equal to the number of moles of a component divided by the total number of moles of a solution. Because it is a ratio, mole fraction is a unitless expression. The mole fraction of all components of a solution, when added together, will equal

2. Molarity describes the number of moles of the substance per liter of liquid. In chemistry, a mole is a unit of measurement for a chemical substance. The scientific noun molarity describes the concentration of a substance as measured by the number of moles divided by the volume of the solution

3. Molality is a property of a solution and is defined as the number of moles of solute per kilogram of solvent. The SI unit for molality is mol/kg. A solution with a molality of 3 mol/kg is often described as “3 molal” or “3 m.” However, following the SI system of units, mol/kg or a related SI unit is now preferred

Answer 2

Answer:-

Mole fraction:-

equal to the number of moles of component divided by the total number of moles of a solution.

Molarity:-

number of moles of solute divided by number of liters of solution.

Molality:-

the number of moles of solute per kilogram of solvent.