Hi, I need some assistance with the following questions:
1. Processed cheese must be at a pH of 5.5 to 5.9 to prevent the growth of unwanted microorganisms. The quality control supervisor receives a report that a sample has a [OH-] of 1.2x10^-8. Find pH, pOH, [H+] of this sample.
2. How many grams of potassium hydroxide, KOH, would be necessary to prepare 175 mL of a solution that is 0.45M in KOH? What is the pH of this solution?
a) pOH = -Log[OH-] = -Log(1.2x10^-8 = 7.92
pH + pOH = 14
pH = 14-pOH = 14-7.92 = 6.08
pH = ...
This solution is comprised of a completed response which works through all of the steps required for both of these calculation based chemistry problems. All of the necessary equations and variables are provided.