Question

How many ml of concentrated hydrochloric acid would be required to make 1 L of a 0.2 M solution? Assume that concentrated hydrochloric acid is 12.1 M

Answer 1

Answer: The volume of concentrated hydrochloric acid required is 16.53 mL

Step-by-step explanation:

To calculate the volume of concentrated solution, we use the equation:

`M_1V_1=M_2V_2`

where,

`M_1\text{ and }V_1` are the molarity and volume of the concentrated solution

`M_2\text{ and }V_2` are the molarity and volume of diluted solution

We are given:

Conversion factor: 1 L = 1000 mL

`M_1=12.1M\\V_1=?mL\\M_2=0.2M\\V_2=1L=1000mL`

Putting values in above equation, we get:

`12.1* V_1=0.2* 1000\\\\V_1=16.53mL`

Hence, the volume of concentrated hydrochloric acid required is 16.53 mL