Write a short scientific explanation using the case data. Co…
Write a short scientific explanation using the case data. Compare Microhabitat A and Microhabitat B. Explain how one abiotic factor may help explain a difference in biological activity. Use careful scientific language and include one limitation.
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Answer the following question. Submit your final answer here. A 25.00 mL aliquot of the weak (HA) acid was titrated with 0.1185 M NaOH(aq) using both an indicator and a pH meter. Ka (HA), is 6.50 x10-4. A total of 29.38 mL of 0.1185 M NaOH(aq) was required to reach the equivalence point. 1. Calculate the molarity of the acid solution. (4 pts) 2. Calculate the pH of the acid solution before titration (Hint: use the RICE table). (4 pts) 3. Calculate the pH and [A-] at the half-equivalence point. (3 pts) 4. Calculate the pH at the equivalence point of the titration. (Hint: use Kb for hydrolysis of A- anion and RICE table). (3 pts) 5. Suggest an appropriate indicator for titration. Explain your choice. (2 pts) 6. Calculate the pH of the solution after 20.00 mL of 0.1185 M NaOH(aq) was added. (Hint: ignore the spectator sodium ion and find moles of acid and A- and use Henderson-Hasselbalch equation). (2EC) To receive full credit, show all work in handwriting or use the software showing calculations and units properly and clearly. Indicator pKa Phenolphthalein 9.3 Bromothymol blue 7.0 Methyl red 5.0 Thymol blue 2.0 Methyl violet 0.80 GL
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Answer the following question. Submit your final answer here. Use the Henderson-Hasselbalch equation to calculate the pH of the solution prepared by dissolving 0.55 mol of a weak acid (Ka=2.77×10-5) and 0.78 mol of its conjugate base in enough water to make 1.00L of buffer solution
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