2. An environmental chemist is investigating a report of ground water contaminat

Question

2. An environmental chemist is investigating a report of ground water contamination. A 50 mL sample was taken from the suspected water. The sample was analyzed and found to contain 0.08582 mg of carcinogens. The acceptable level is 0.5 ppm. Determine the ppm of carcinogenic material in the sample and if it is acceptable. 3. A solution was prepared using the same volume of acetic acid and its conjugate base. The solution contains 0.1325 M acetic acid and 0.1555 M acetate. The pKa of acetic acid is 4.76. What is the pH of the solution and will it have buffering ability?

Explanation / Answer

2)
ppm = mass in g * 10^6 / volume in mL
= 0.00008582 * 10^6 / 50 mL
= 1.72

This is more than 0.5 ppm. So, this is not acceptable

Answer:
1.72 ppm
not acceptable

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