Asked by L
Calculate the pH of 10.00 mL of 0.40 mol/L of hydrochloric acid.
Answers
Answered by
DrBob222
pH = -log (H^+)
HCl ionizes 100% so it is 0.4M. Substitute into the pH equation and solve.
HCl ionizes 100% so it is 0.4M. Substitute into the pH equation and solve.
Answered by
paul
i did that, but the answer is wrong.
Answered by
DrBob222
What did you get. SHOW YOUR WORK. That way I can find the error.
Your answer should have been 0.397 which I would round to 0.4 as a pH. By the way, the 10.00 mL has nothing to do with it (the concn is what counts) UNLESS the 10.00 mL was diluted to some final volume. But the problem does not say that.
Your answer should have been 0.397 which I would round to 0.4 as a pH. By the way, the 10.00 mL has nothing to do with it (the concn is what counts) UNLESS the 10.00 mL was diluted to some final volume. But the problem does not say that.
Answered by
paul
oh ok! i wasn't rounding, thank you.
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