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Compare the pH values in the dilution experiment for each of the acids and bases used to the pH detemined for distilled water.
HCl : 10^-2 : 3.03 10^-3 :4.48 10^-4:5.95 10^-5:6.55 10^-6:6.60 10^-7:6.70
acetic acid : 10^-2 : 5.01 10^-3 :5.69 10^-4:6.46 10^-5:6.94 10^-6:7.04 10^-7:7.62
NaoH :10^-2 : 11.98 10^-3 :10.69 10^-4:9,84 10^-5:8.95 10^-6:8.05 10^-7:7.40
NH3 : :10^-2 : 9.86 10^-3 9.34 10^-4:8.83 10^-5:8.45 10^-6:8.23 10^-7:8.16
Do the pH values for the more dilute solutions approach the pH of the distilled water? What would we expect to happen if we continued to dilute these samples even further?
Polly Esther determined the Ca2+ ion content of a 100 mL sample of calcium fortified orange juice. After adding 2.0 M HCl solution to the sample, she filtered the juice to remove the pulp and other particulate matter
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Using words and pictures, explain why impurities usually lower the melting point of a substance. Next, imagine a case where an impurity actually RAISES the melting temperature of a pure substance
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What is the percent dissociation of ascorbic acid if the solution has a pH = 5.50 and a pKa = 4.10?
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