WATER CHEMISTRY (EES4201) HOMEWORK-06: ACIDS/BASES PART-1 & MINTEQ Submission on
ID: 540718 • Letter: W
Question
WATER CHEMISTRY (EES4201) HOMEWORK-06: ACIDS/BASES PART-1 & MINTEQ Submission on CANVAS will be due on October 20, 2017 at 9:35 AM. No late submission will be accepted after this deadline. PART-A: Determination of the pH of Simple Solutions Containing an Acid or a Base Problem-1 (20 points): Using the mass and charge balance equations based approaches and assuming ideal solution behavior for all solutes, determine the pH of a water solution that containing 103 mol/L of sulfuric acid (H2SO4). Show all steps from species types to the calculated pH value.Explanation / Answer
Answer:
Sulfuric acid is a diprotic acid, because it contains 2H^+ ions.
Concentration of sulfuric acid = 1 x 10^-3 mol/L
Each molecule contains 2H+ ions. So, 2 x 10^-3 = 0.002
pH = -log[H+]
pH = -log(0.002) = 2.69
The pH of 10^-3 H2SO4 is 2.69.
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