Answer: The volume of concentrated hydrochloric acid required is 16.53 mL
Explanation:
To calculate the volume of concentrated 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 solution
[tex]M_2\text{ and }V_2[/tex] are the molarity and volume of diluted solution
We are given:
Conversion factor: 1 L = 1000 mL
[tex]M_1=12.1M\\V_1=?mL\\M_2=0.2M\\V_2=1L=1000mL[/tex]
Putting values in above equation, we get:
[tex]12.1\times V_1=0.2\times 1000\\\\V_1=16.53mL[/tex]
Hence, the volume of concentrated hydrochloric acid required is 16.53 mL