## anonymous 5 years ago Describe how to prepare 1.00 L of 1.0% (w/v) NaOH from a 2.0 M NaOH stock

1. anonymous

$V_1M_1=V_2M_2$$(1.00L)(1.0M)=V_2(2.0M)$$1.00mol=V_2(2.0M)$/2.0M /2.0M$.5L=V_2$Chemistrty :D

2. anonymous

Wow! That's it?!

3. anonymous

I think so, what's 1.0%(w/v) is that the same as Molarity?

4. anonymous

It stands for (mass/volume)= [Mass of solute (g) / Volume of solution (ml)] x 100

5. anonymous

Molarity is moles/liter

6. anonymous

Hmmm, this just got tougher.

7. anonymous

Haha, yes. It sucks.

8. anonymous

is w/v weight/volume?

9. anonymous

Ya :)

10. anonymous

How does the 1.0% come in? Is it 1g/L?

11. anonymous

1% apparently = 10mg/ml

12. anonymous

Is that 2.0 mols of NaOH or 2.0 Molarity of NaOH?

13. anonymous

It's 2.0 molarity (mol/liter)

14. anonymous

I got$2.0molNaOH/1L \times39.998g NaOH/1mol \times 1000mg/1g \times 1ml/1mg \times 1L/1000ml$All my units cancel, and I'm left with$79.996$So now I'm confused.

15. anonymous

Haha, this looks like my answer. I am going on two hours of trying to figure this one out. I think I will just combine our answers and turn that in :) Thanks for all of your help!!! I really, really appreciate it!

16. anonymous

Woops, should be$1ml/10mg$

17. anonymous

$7.9996NaOH$Other than that I'm stumped.

18. anonymous

That actually sounds like a reasonable answer. Thank you!!

19. anonymous

You're welcome :)