Question

How much volume of 4 M and 2 M solution of KOH is required to dissolve to obtain 3 L KOH solution of molarity 2.5 M

Answer 1

i have 2 just find separate volumes right?

Answer 2

find out no. of moles in 3L 2.5M KOH
moles from 4M + moles from 2M = moles from 3L 2.5M KOH

Answer 3

oh ok .thnx.. :D

Answer 4

but both volumes V1 AND V2 are different right..so i get
7.5= 4V1 + 2V2

Answer 5

@shubhamsrg

Answer 6

yes..you sure thats all the info ?

Answer 7

yeah...

Answer 8

hmm
V1 + V2 =3
use this

Answer 9

OK i got ithe answer! THNX A LOT FR ALL YOUR HELP!! :D

Answer 10

gglad to help