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Acid Base Practical question HELP

I have no idea how to do question B and C, can someone explain?
Screenshot 2020-02-28 at 12.04.10 am.jpg

Maybe it's because they are using a pH meter to measure the change and not using a reliable indicator such as Methyl Orange which has a sharp colour change ???

Reply 2

JzANonM

Original post by DamnBro

Maybe it's because they are using a pH meter to measure the change and not using a reliable indicator such as Methyl Orange which has a sharp colour change ???

But surely a pH meter is much more precise tho

Reply 3

Pigster

Original post by JzANonM

I have no idea how to do question B and C, can someone explain?
Screenshot 2020-02-28 at 12.04.10 am.jpg

I would guess that sticking to a strict 2 cm3 interval on taking pH reading is the problem. Close to the equivalence point, you should be taking readings much more frequently, i.e. reducing the interval to eventually every 0.05 cm3.

Otherwise, you'll miss the important vertical section.