Concentration Chemistry Example 5

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Example 5

easy
What is the molarity of a solution made by dissolving 0.7500.750 mol of KNO3\text{KNO}_3 in enough water to make 2.502.50 L of solution?

Solution

  1. 1
    Use M=nVM = \frac{n}{V}.
  2. 2
    M=0.7502.50=0.300 mol/LM = \frac{0.750}{2.50} = 0.300\,\text{mol/L}.

Answer

0.300 M0.300\,\text{M}
Concentration describes how much solute is present per unit volume of solution. For molarity, divide moles of solute by liters of solution.

About Concentration

The quantity of solute dissolved per unit volume of solution, most commonly expressed as molarity (MM) in units of moles per liter (mol/L).

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