[sh00tingstarz]

1.  Calculate the pH of 1.2 M HCl.

Work:       
-when I attempt this problem using -log(1.2) I get a negative pH which I know cannot be right.

2. Calculate the pH and pOH of a solution obtained from equal volumes of 0.10 M H₂SO₄ and 0.30 M NaOH.

 Work:   
 -the K_a of sulfuric acid is 1.03 x 10^-2
    k_b=k_w/k_a
   Therefore, k_b of sulfuric acid is 1x10^-14/1.03x10^-2 = 9.7x10^-13.  I'm not sure what else to do from there.

[Borek]

I get a negative pH which I know cannot be right.

So you have to learn something new - pH can be negative.

Calculate the pH and pOH of a solution obtained from equal volumes of 0.10 M H₂SO₄ and 0.30 M NaOH.

Looks like limiting reagent question... Hint: it was a hint

[agrobert]

This should clear up negative pH

http://antoine.frostburg.edu/chem/senese/101/acidbase/faq/negative-pH.shtml

2

Write the chemical reaction.  What is the concentration of H⁺?  Calculate pH from this and then subtract from 14 for pOH.