Question

What volume is neeeded to have 0.1 m NaOH in a 0.05 M solution. Show work please. Formula is M=mol/L

Answer 1

0.1 m NaOH = 0.1mole NaOH?

Answer 2

if yes
0.1mol / vol required = 0.05M
vol required = 0.1/0.5 = 0.2L

Answer 3

Callisto, I have a question. If you have 0.1 mols of compound per 1.2 L of liquid, wouldn't that be 0.0833 mols/L?

Answer 4

yes

Answer 5

I guess I'm reading the question wrong :-(

Answer 6

I thought it meant changing the concentration from 0.1 M to 0.05M

Answer 7

ouch.. revised:
if yes
0.1mol / vol required = 0.05M
vol required = 0.1/0.05 = 2L

Answer 8

Oh okay. I guess it's a good thing that even though I don't know what I'm doing, that I'm asking questions lol :-)

Answer 9

another medal for you!

Answer 10

lol

Answer 11

I like these molarity questions, but it's been a long time since I've had to do them.

Answer 12

Hey, side question: If you have 0.1 Molar solution of NaOH and you want to get it to .05 M concentration, how do you figure out the volume of H20 you need to add?

Answer 13

wait, I must have just answered my own question. Same method I guess.

Answer 14

sorry, was having lunch, yea, it's the same method..