5. An unknown weak acid with a concentration of 0.095 M has a pH of 1.82. What is the K, of the weak

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#5, please. ("what is the Ka of the weak acid")

ueous 130
197/200
4
R
5. An unknown weak acid with a concentration of 0.095 M has a pH of 1.82. What is the K₂ of the weak
6. Calculate the pH of the following solutions at 25 °C:
a. 0.25 M KOH
b. 0.75 M NH₂I
C. a solution that is made by mixing 15.0 mL of 0.020 M HCl and 25.0 mL of 0.050 M HBr
d. a 0.085 M solution of methylamine (CH3NH₂)
7. Common aspirin is acetylsalicylic acid (HC9H7O4), which is a weak acid with Ka = 3.16 x 10-4. Calculate the
pH and the percent ionization of a solution in which 325 mg of aspirin is dissolved in 10.0 mL of water.
Transcribed Image Text:ueous 130 197/200 4 R 5. An unknown weak acid with a concentration of 0.095 M has a pH of 1.82. What is the K₂ of the weak 6. Calculate the pH of the following solutions at 25 °C: a. 0.25 M KOH b. 0.75 M NH₂I C. a solution that is made by mixing 15.0 mL of 0.020 M HCl and 25.0 mL of 0.050 M HBr d. a 0.085 M solution of methylamine (CH3NH₂) 7. Common aspirin is acetylsalicylic acid (HC9H7O4), which is a weak acid with Ka = 3.16 x 10-4. Calculate the pH and the percent ionization of a solution in which 325 mg of aspirin is dissolved in 10.0 mL of water.
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