Question

A 7.00-mL portion of 8.00 M stock solution is to be diluted to 0.800 M. What will be the final volume after dilution? Enter your answer in scientific notation. Be sure to answer all parts. x 10 (select)L

Answer 1

Step-by-step explanation:

The number of moles of solute present in liter of solution is defined as molarity.

Mathematically, Molarity =
`\frac{\text{no. of moles}}{\text{Volume in liter}}`

Also, when number of moles are equal in a solution then the formula will be as follows.

`M_(1) * V_(1) = M_(2) * V_(2)`

It is given that
`M_(1)` is 8.00 M,
`V_(1)` is 7.00 mL, and
`M_(2)` is 0.80 M.

Hence, calculate the value of
`V_(2)` using above formula as follows.

`M_(1) * V_(1) = M_(2) * V_(2)`

`8.00 M * 7.00 mL = 0.80 M * V_(2)`

`V_(2) = (56 M. mL)/(0.80 M)`

= 70 ml

Thus, we can conclude that the volume after dilution is 70 ml.