What is the Ph and is it basic or acidic ?

Question

1. [H3O+] = 4.33 x 10^-7
2. [OH] = 3.33 x 10^-9 
3. pH= 12.3 [H3O+]=
4. pOH = 4.46 [H3O+] =

Answer 1

1. pH = -log(4.33 x 10^-7 M) = 6.363, less than 7 so acidic
2. pOH = -log(3.33 x 10^-9 M) = 8.478. pH = 14 - pOH = 14 - 8.478 = 5.522, acidic
3. [H₃O⁺] = 10^-12.3 = 5 x 10^-13 M
4. [H₃O⁺] = 10^{-(14 - 4.46)} = 2.8 x 10^-10 M

Hope this helps!