pH Problems:
1) What is the pH if the concentration of [H+] is 0.0001?
2) What is the pOH if the pH is 4?
3) What is the pH if the pOH is 12?
4) When the [H+]= 1.0×10-7, then the pH is?
5) When the [H+]= 1.0×10-12, then the pH is?
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