Question

unknown solutions A and B are 0.1 M solutions of either HCI or NaOH. According to your pH measurement, which is which

10% Bleach Question: 1. Unknown solutions A and B are 0.1 M solutions of either HCl or NaOH. According to your pH measurements, which is which? 1 2. The pH of pure water is 7. Comment on how closely your measured pH values from each measurement method compared to the expected value. Which method was more appropriate for measuring the pH of the bleach solution? 3. it 5 -EM120: Week 4 Lab Aame: Questions: 1. How does the addition of HCl affect the concentration of the H" ions present in the solution? 2. How does the addition of 1 M HCl effect the pH of the water? 3. Graph the pH as a function of the drops of 1 M HCl added. The pH should be on the Y axi the drops on the X axis. 4. From the above graph, how would you describe the rate at which the pH value of the solution changed? 6019 HEM120: Week 4 Lab Name: Questions: How does the addition of 1 M HCl change the pH of the buffer solution? 1 2. Graph the pH as a function of the drops of 1M HCI added. The pH should be on the Y axis and the drops on the X axis. From the above graph, how would you describe the rate at which the pH value of the solution changed? Compare the magnitude and rate of pH change of 1 M HCI added to DI water vs. that of 1 M HCl added to your buffer solution. What changes and similarities did you observe? es: CalendarS F= (1.8) 8T) .06 90 qua (F-32) / 1.8 . =. = 760 mm Hg er 1 -.) Graviscon Below, construct a bar graph with the names of the active ingredient for each antacid on the X axis and the average amount of active ingredient required to neutralize the simulated stomach acid. Which antacid required the least amount of active ingredient to counteract the simulated stomach acid? Why is it more effective? 5. OT EM120: Week 4 Lab me: le 4: olution pH value using a pH values using strips Conclusion: Acid or base from part 1 pH meter I water nknown A 125 nknown B 2.7 2.6 emon Juice negar 0% Bleach estion: 1. Unknown solutions A and B are 0.1M solutions of either HCI or NaOH. According to your pH measurements, which is which? 7 L04 The pH of pure water is 7. Comment on how closely your measured pH values from each measurement method compared to the expected value. 2. 3. Which method was more appropriate for measuring the pH of the bleach solution?

Answer 1

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