Question

What volume of a 0.25 mol/L salt solution in a lab contains 0.10 mol of sodium chloride?

Answer 1

molarity= moles x vol

Answer 2

isnt it 0.4L

Answer 3

molarity is molarity= mol/l

Answer 4

Yes, molarity is equal to the number of moles solute divided by the Liters of solution.
We are given the moles solute (0.10 mol NaCl). We know the Molarity (0.25 mol/L). Now we just have to set up an equation to find the volume.

Answer 5

so 0.25=0.1/y

Answer 6

y=0.4L?

Answer 7

Looks good. :)

Answer 8

Yeah, it cant be 2.5L right, it doesn't seem right

Answer 9

If you checked: 0.10 / 2.5 = 0.04 mol/L, but it isn't equal to 0.25 like we were given.

Answer 10

True. Thanks for the help

Answer 11

You're welcome! :)