The graphs labeled (a) and (b) show the titration curves for two equal-volume sa
ID: 1054433 • Letter: T
Question
The graphs labeled (a) and (b) show the titration curves for two equal-volume samples of bases, one weak and one strong.
Both titrations were carried out with the same concentration of strong acid.
(i) What is the approximate pH at the equivalence point of each curve?
(ii) Which graph corresponds to the titration of the strong base and which one to the weak base?
Explanation / Answer
From the curve A we can see that at the start of tritration the pH value is 13 means that the curve A is the titration curve of Strong acid vs strong base and the pH at equivalence point will be 7.
From the curve B the start of tiration the pH value is 11 means that the curve B is the titration curve of strong acid vs weak base and pH at equivalence point is less than 5
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