Saturday
April 19, 2014

Homework Help: Chem

Posted by Anonymous on Wednesday, February 27, 2013 at 9:02pm.

A solution is made by dissolving 26.9 g of NaOH in approximately 450 mL of water in a volumetric flask. The solution becomes quite warm, but after it is allowed to return to room temperature, water is added to total 500 mL of solution. Calculate the pH of the final solution. Report pH to 2 decimal places.

I'm super confused about this one. I got the moles to be .6748 then divided that by .5 to get 1.3496 M. But then when I got the -log it was a negative answer. Why?

Oh, and this one: Calculate the pOH of 1.62 M HI.

I thought it was a simple matter of getting the -log and then subtracting from 14 to get 13.8 but that wasn't right.

Please help!

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

chem - Calculate the molarity of a solution made by dissolving 0.150 in enough ...
Chem - What would be the resulting molarity of a solution made by dissolving 21....
Chem 121 - A solution is made by dissolving 0.35 mole of LiI in enough water to ...
chemistry - What is th pH of a buffer solution made by dissolving 0.10 mol of ...
Chem 1010 - Determine the molarity of a solution made by dissolving 13.8 g of ...
general chem - Calculate the molarity of a solution made by dissolving 12.5 ...
general chem - Calculate the molarity of a solution made by dissolving 12.5 ...
Chem 2 - What is the molal concentration of a solution made by dissolving 34.2g ...
chem - A solution is prepared by dissolving 75.0 grams of sucrose (C12H22O11) in...
Chemistry - A solution is made by dissolving 18.9 g of HCl in enough water to ...

Search
Members