PPT Slide

Concept 11. The meanings of concentration and molarity

48

Solution Concentration and the Calculation of Molarity

• Most reactions occur in solution, so quantitative aspects of  solution reactions are important in chemistry and other sciences.

• Need to know the concentration of reactants - the number of  mol in a given volume - to calculate the volume of solution  that contains a given number of mol.

• Solutions consist of a lesser amount the solute, dissolved in a  larger amount of another substance, the solvent.

• Molarity (M) expresses solution concentration in terms of  moles of solute per liter of solution:

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