Answer:
To make 100 mL of a solution 100mM of acetic acid you need to add 0,57 mL of glacial acetic acid and mix with 99,43 mL of H₂O
Explanation:
Molarity is a way to express concentration in a solution, in units of moles of solute per liter of solution.
To know how to do 100 mL of a solution 100mM of acetic acid it is necessary to know, first, the moles of this substance with the desired volume and concentration , thus:
0,100 L ×[tex]\frac{0,100 mol}{L}[/tex] = 0,0100 moles of acetic acid
These moles are obtained from glacial acetic acid. Thus, it is necessary to convert these moles to grams with molar weight and then to mililiters with density:
0,0100 moles ×[tex]\frac{60,05 g}{1 mol}[/tex] ×[tex]\frac{1 mL}{1,05 g}[/tex] = 0,57 mL of glacial acetic acid
Thus, to make 100 mL of a solution 100mM of acetic acid you need to add 0,57 mL of glacial acetic acid and mix with 99,43 mL of H₂O -The necessary to obtain 100 mL-
I hope it helps!
