Check answers and help please! Thanks!
1. Pure water has a pH of 7.0. What must be the concentration of hydrogen ions in pure water?

1 × 10-7 M-----------Answer?

1 × 10-14 M

1 × 107 M

1 × 1014 M

2.It should be a negative so a or b, but I say A
What is the pH of a solution that has [H+] = 3.0 × 106 M?

4.32

5.52------ Answer?

6.0

7.76

Question

Check answers and help please! Thanks! 
1. Pure water has a pH of 7.0. What must be the concentration of hydrogen ions in pure water?

       1 × 10-7 M-----------Answer?

       1 × 10-14 M

       1 × 107 M

       1 × 1014 M

2.It should be a negative so a or b, but I say A
What is the pH of a solution that has [H+] = 3.0 × 106 M?

       4.32

       5.52------ Answer?

       6.0

       7.76

naturesweetie · Answer

On number two it is 3.0 x 10^-6

anonymous · Answer

#1 1.0 x 10^-7 is correct

#2 5.52