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Sagot :
If 14.5 g NaCl is dissolved in enough water to make 1L of solution 0.2481177 mol/L is the molarity of the solution.
What is the molarity of a solution?
Molarity (M) is the amount of a substance in a certain volume of solution. Molarity is defined as the moles of a solute per litres of a solution. Molarity is also known as the molar concentration of a solution.
[tex]\rm Molarity = \rm\frac{Moles \;of \;solute}{Volume\; of \;solution \;in \;litre}[/tex]
Given data:
The volume of solution= 1 L
Given mass = 14.5 g
Step 1: Calculating the molarity of NaCl.
The Molar mass of NaCl = 58.44 g/mol
[tex]\rm Mol= \rm\frac{Given \;mass}{Molar \;mass}[/tex]
[tex]\rm Mol= \rm\frac{14.5 g}{58.44 g/mol}[/tex]
Mol = 0.2481177 mol
Putting the given values in the equation.
[tex]\rm Molarity = \rm\frac{Moles \;of \;solute}{Volume\; of \;solution \;in \;litre}\\[/tex]
[tex]\rm Molarity = \rm\frac{0.2481177 mol}{1 L}\\[/tex]
Molarity =0.2481177 mol/L
Hence, If 14.5 g NaCl is dissolved in enough water to make 1L of solution 0.2481177 mol/L is the molarity of the solution.
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