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Laredo Community College BIOLOGY 1308 LAB QUIZ 3 1)Biological significance of buffers: 2

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Laredo Community College

BIOLOGY 1308

LAB QUIZ 3

1)Biological significance of buffers:

2. Strongest base:

 

3. Defined as a chemical species that can donate (lose) a proton h+:

 

4. Suppose you are given an unknown solution and you need to test its pH. The pH meter is broken, and all you have is the indicator bromothymol blue to use. You add two drops of bromothymol blue to 10 mL of your unknown, and the solution turns a bright yellow. Which of the following is the best estimate of the pH of the unknown solution?

 

5. or water-based, solution is a liquid in which water is the solvent and other chemicals are dissolved in it.

 

6. What color did the bromothymol blue indicator turn when it was added to the test tube containing citric acid?

 

7. What makes an acid acidic?

 

 

8. What is the difference in concentration of hydronium ions between pH 1 and pH 4?

9. What is the smallest pH possible? 

10. Bronsted-Lowry is an acid, that donates a proton is aqueous solution: