Question
In: Chemistry
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?
Solutions
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 2 years agoRelated Solutions
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REPORT FORM ; ACID TITRATION CURVE. Name of acid (or acid salt) NH4Cl mass of solid...
REPORT FORM ; ACID TITRATION CURVE.
Name of acid (or acid salt) NH4Cl
mass of solid acid = 0.160g NH4Cl
volume of water used to dissolve acid =40ml
NaOH(titrant)=30ml
Data analysis:
PH at equivalent point=11.25, pH at half equivalent point
=9.49
Ka of =3.2*10^-10
Questions: calculate pH at beginning of titration, pH at
equivqlent point, pH after 20.0ml of titrant were added.
Thank you.kindly assist
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