Percent volume concentration

Introduction :
Concentration of a solution depends upon the amount of solute present in the solution.  The concentration of the solution is expressed in many ways.  One of the important way of expressing the concentration is percent volume concentration.  Other means of expressing the concentration are mass percent which is nothing but the mass of the solute present in the solution expressed as percentage that is (mass of the solute/mass of solution) x 100.  Another way of expressing the concentration is by molarity it is the mole of solute present in a liter of the solvent it is expressed as mol/litre.  Yet another way of expressing the concentration is by molefraction is the fraction of moles that is present in the whole of the solution.  That is if two component A and B are present in the solution.  the mole fraction of A is the number of moles of A/moles of A + moles of B.

Concentration as volume percent:

In most of the liquid samples the concentration is expressed by volume percent
volume present = (volume of the solute/volume of the solution) x 100.  This is the easiest method of expressing the concentration of a liquid solution.
For example if you have 10%volume/volume of antifreeze that is ethylene glylcol in water it means that there is 10mL of ethylene glycol in 100mL of the soluiton or 10L of ethylene glycol in 100L of the solution

Problems on percent volume concentration:

Find out the volume percentage of ethanol when 10mL of ethanol is mixed in 190mL of the water?
Soluiton:

Volume of the solute that is ethanol is 10mL

volume of the solvent that is water is 190mL

total volume of the solution = volume of the solute + volume of the solvent = 10mL + 190Ml= 200mL
So volume percentage =(volume of solute  / volume of solution) x 100
= (10 / 200) x 100 = 5% v/V