Question

If I dilute 250 mL of 0.10 M lithium acetate solution to a volume of 750 mL, what will the
concentration of this solution be?

(250 ml)(0.10 M) = (750 ml)(Mf); Mf
= 0.033 M
In this equation i used the formula you gave me but how does he get 0.033 i have gotten 0.025

Answer 1

Btw this is the answer (250 ml)(0.10 M) = (750 ml)(Mf); Mf
= 0.033 M

Answer 2

Hello!

Answer 3

Hi, so notice that the \(final\) volume was 750 mL

this is different from the last question where you were told that you \(added\) 560 mL \(to\) 340 mL .

So this question should look like

(250 ml)(0.10 M) = (750 ml)(Mf)

not

(250 ml)(0.10 M) = (750 +250 ml)(Mf)

Answer 4

i know that's what you wrote above, but you computed it as

(250 ml)(0.10 M) = (750 +250 ml)(Mf)

Answer 5

Yeah thats what i did

Answer 6

Ok so it should be just as the questions says when it says to dilute

Answer 7

like in order?

Answer 8

well they're both dilutions.

in the previous one, they told you how much water you added to dilute it

in this one, you were told the actual final volume

do you see how that's different?

Answer 9

Yes!

Answer 10

Yes all my questions are different like that

Answer 11

so this one would be 25=750?

Answer 12

it would be (250 ml)(0.10 M) = (750 ml)(Mf)

Answer 13

Thank you!

Answer 14

no problem!