Posted by **Jan** on Saturday, January 20, 2007 at 11:34pm.

Express the following in mol/kg

[H+]in a water with a pH of 6.8?

Ok, so the pH=-log10[H+]. Here we have a pH of 6.8 so we have...

6.8=-10log10[H+]

solving we get...

[H+]=10^-6.8 mol/L

converting from Liters to m^3 and dividing by the density of water we get...

(10^-6.8 mol/L)*(L/0.001m^3)*(m^3/1000kg)=1.585(10^-7)mol/kg

Hope that helps!

Thanks.

I have a few more problems...can you help?

how about expressing 230 parts per thousand (ppt) of SO4^2- in mol

per kg?

You are likely to have more luck if you repost as a new question.

## Answer This Question

## Related Questions

- AP Chemistry - The equilibrium constant for thermal dissociation of F2 F2(g)<...
- chemistry - Which of the following mixtures will be a buffer when dissolved in a...
- Algebra 2 - If log10^9=0.95 and log10^2=0.30, find the following: 1. log10^9/2 2...
- Chemistry - Dr. Bob ok well here is what i have gotten so far: on the problem ...
- Chemistry - What volume of hydrogen is necessary to react with five liters of ...
- chemistry - 4 moles of water are heated from 240 K to 310. find delta entropy ...
- chemistry - 4 moles of water are heated from 240 K to 310. find delta entropy ...
- Chemistry(Please check) - Which of the following mixtures will be a buffer when ...
- AP Chemistry - Carbon monoxide reacts with oxygen to form carbon dioxide by the ...
- ap chemistry - Carbon monoxide reacts with oxygen to form carbon dioxide by the...

More Related Questions