Imagine that you are in chemistry lab and need to make 1.00 LL of a solution with a pH of 2.50. You have in front of you 100 mLmL of 7.00×10−2 MM HClHCl, 100 mLmL of 5.00×10−2 MM NaOHNaOH, and plenty of distilled water. You start to add HClHCl to a beaker of water when someone asks you a question. When you return to your dilution, you accidentally grab the wrong cylinder and add some NaOHNaOH. Once you realize your error, you assess the situation. You have 80.0 mLmL of HClHCl and 87.0 mLmL of NaOHNaOH left in their original containers. Part A Assuming the final solution will be diluted to 1.00 LL , how much more HClHCl should you add to achieve the desired pH? Express your answer to three significant figures and include the appropriate units.

Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter14: Equilibria In Acid-base Solutions
Section: Chapter Questions
Problem 62QAP: Use the same symbols as in Question 61 ( = anion, =OH) for the box below. (a) Fill in a similar box...
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Imagine that you are in chemistry lab and need to make 1.00 LL of a solution with a pH of 2.50.

You have in front of you

  • 100 mLmL of 7.00×10−2 MM HClHCl,
  • 100 mLmL of 5.00×10−2 MM NaOHNaOH, and
  • plenty of distilled water.

You start to add HClHCl to a beaker of water when someone asks you a question. When you return to your dilution, you accidentally grab the wrong cylinder and add some NaOHNaOH. Once you realize your error, you assess the situation. You have 80.0 mLmL of HClHCl and 87.0 mLmL of NaOHNaOH left in their original containers.

Part A

Assuming the final solution will be diluted to 1.00 LL , how much more HClHCl should you add to achieve the desired pH?

Express your answer to three significant figures and include the appropriate units.

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