what is molality ; molarity and mass percent ?
Answers
Molality=number of moles of solute/mass of solvent in kg
Molarity=number of moles of solute /volume of solution in litre
mass%=(mass of solute/mass of solution) ×100
What is mole ?
- It is a fundamental physical quantity to measure the amount of a substance.
It is a collection of 6.022 × 10^23 particles of any substance or thing.
What is Molality ?
- Molality ( m ) is expressed as dissolved in hundred grams that is one kg of solvent. It is denoted by m.
- It is calculate by : m ( ) = moles of solute / kg of solvent
What is Molarity ?
- It is expressed as moles of solute contained in one litre of solution or it is also taken as millimoles of solute in 1 ml of solution. It is denoted by M.
- It is calculated by : Molarity ( M ) = moles of solute / litres of solution = millimoles of solute / millimetres of solution.
What is mass percentage ?
- It is the percentage of the mass of solute present in total mass of solution.
- Mass percentage = mass of solute × 100/ mass of solution.