not_XIX_forever
Badges: 15
Rep:
?
#1
Report Thread starter 4 weeks ago
#1
Hi,
Would anyone be able to do me a huge favour?
Could you please explain the answers to:
3a
and
5b

from the following:
https://pmt.physicsandmathstutor.com...s%201%20QP.pdf
0
reply
Claisen
Badges: 12
Rep:
?
#2
Report 4 weeks ago
#2
3a because you want the solution to contain both HA and A-, A- will be able to react with any small increase in H+ and resist an overall change in pH.

5b compare the pH curve with previous ones. The previous pH curves rapidly change in gradient, 5b is a very small change in gradient as the vol of base increases. This means there won't be a sharp end point. In school, you may see that only half a drop or 1 drop of titrant is needed to cause an entire colour change when you approach the endpoint. This will not happen with whatever 5b is because it is gradual.
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

With HE fairs postponed, would a virtual HE fair be useful?

Yes (80)
61.54%
No (50)
38.46%

Watched Threads

View All
Latest
My Feed