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Help!! Ph calculation question!

HARD2.PNG

here is the question. I answered correctly the first part, but i'm truley stumped on the second part. The answer for the second part is 2.3.

Thanks
Reply 1
Original post by Acylation23
HARD2.PNG

here is the question. I answered correctly the first part, but i'm truley stumped on the second part. The answer for the second part is 2.3.

Thanks



You're reacting a strong acid with a strong base

so work out the moles of H+ and OH- you are reacting then work out the excess - that is the moles of H+ left


Does that help?
Reply 2
Basically a limiting reagent problem.
Reply 3
Original post by Secret.
You're reacting a strong acid with a strong base

so work out the moles of H+ and OH- you are reacting then work out the excess - that is the moles of H+ left


Does that help?


Most definitely helps :biggrin:.

Thank you!! +rep
Oh. I got ph=2 for the second question. Is that wrong? I'm really struggling with these pH calculations:frown:

Edit: Never mind I managed to get 2.3!! So happy with myself.:smile:
(edited 10 years ago)

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