Answer: The concentration of the solution is 0.25 M
Explanation:
Let the volume of solution of 2.5 M NaCl be 10 mL
We are given:
Dilution ratio = 1 : 10
So, the solution prepared will have a volume of = [tex]\frac{10}{1}\times 1000=100mL[/tex]
To calculate the molarity of the diluted solution, we use the equation:
[tex]M_1V_1=M_2V_2[/tex]
where,
[tex]M_1\text{ and }V_1[/tex] are the molarity and volume of the concentrated NaCl solution
[tex]M_2\text{ and }V_2[/tex] are the molarity and volume of diluted NaCl solution
We are given:
[tex]M_1=2.5M\\V_1=10mL\\M_2=?M\\V_2=100mL[/tex]
Putting values in above equation, we get:
[tex]2.5\times 10=M_2\times 100\\\\M_2=\frac{2.5\times 10}{100}=0.25M[/tex]
Hence, the concentration of the solution is 0.25 M
