What would happen to a titration curve if you start with a larger volume of acid...

What would happen to a titration curve if you start with a larger volume of acid compared to one with a smaller volume of acid?

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Expert Solution

Titration curves for strong acid vs. strong base

We'll take hydrochloric acid and sodium hydroxide as typical of a strong acid and a strong base.

Running acid into the alkali

You can see that the pH only falls a very small amount until quite near the equivalence point. Then there is a really steep plunge. If you calculate the values, the pH falls all the way from 11.3 when you have added 24.9 cm3 to 2.7 when you have added 25.1 cm3.

Running alkali into the acid

This is very similar to the previous curve except, of course, that the pH starts off low and increases as you add more sodium hydroxide solution.

Again, the pH doesn't change very much until you get close to the equivalence point. Then it surges upwards very steeply.

The ultimate result is the equivalence point will reach very slow/ very fast.

queen_honey_blossom answered 1 year ago

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