Respuesta :
The molarity of Na₃PO₄ in the solution is 1 M.
What is molarity?
Molar concentration, also known as molarity, amount concentration, or substance concentration, is a unit used to describe the amount of a substance in a solution expressed as a percentage of its volume. The number of moles per litre, denoted by the unit symbol mol/L as well as mol/dm3 in SI units, is the most widely used unit for molarity in chemistry. One mol/L of a solution's concentration is referred to as one molar, or 1 M.
From the question,
We are to determine the molarity of the solution.
First, we will determine the number of moles of the solute (Na₃PO₄) present
Mass of Na₃PO₄ = 82 g
Using the formula
[tex]number of moles = mass/molar mass[/tex]
Molar mass of Na₃PO₄ = 163.94 g/mol
∴ Number of moles of Na₃PO₄ present = [tex]82/163.94[/tex]
Number of moles of Na₃PO₄ present = 0.500 moles
Now, for the molarity of the solution
Using the formula
Molarity = no. of moles/volume
Volume of the solution = 500 mL = 0.5 L
∴ Molarity of the solution = [tex]0.500/0.5[/tex]
Molarity of the solution = 1 M
Hence, the molarity of the solution is 1 M.
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