Imagine that you are in chemistry lab and need to make 1.00L of a solution with
ID: 933778 • Letter: I
Question
Imagine that you are in chemistry lab and need to make 1.00L of a solution with a pH of 2.80.
You have in front of you
100 mL of 7.00x10-2M HCl,
100 mL of 5.00x10-2M NaOH, and
plenty of distilled water.
You start to add HCl 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 NaOH. Once you realize your error, you assess the situation. You have 81.0mL of HCl and 90.0mL of NaOH left in their original containers.
Assuming the final solution will be diluted to 1.00L , how much more HCl should you add to achieve the desired pH?
My answer was 11.86ml but it's wrong... Please help, i'm not sure where i might have gone wrong.
Explanation / Answer
Here is what I solved before, please modify the figures as per your question. Please let me know if you have further questions. Ifthis helps then kindly rate 5-stars.
Imagine that you are in chemistry lab and need to make 1.00L of a solution with a pH of 2.80.
You have in front of you