1. Which point is the end point for the titration of weak acid? 2. Which point i

Question

1. Which point is the end point for the titration of weak acid?

2. Which point is the end point for the titration of the strong acid?

3. Which point of the titration is excess base?

4. Which point of the titration best illustrates a buffer solution?

Please explain each, sorry for the weird direction graph

e solution? ( 0% titrated ) (3) 10.71 (4) 10.31 (5) 9.57 equivalence point? ( 50% titrated ) (3) 9.57 (4) 9.26 (5) 8.95 alence point? ( 100% titrated ) 5.59 (4) 5.28 (5) 4.98 TO THE TITRATION CURVES BELOW -TITRATION STRONG ACID pH 0 mL Base oint for the titration of the weak acid? C (4) D (5) E oint for the titration of the strong acid? C(4) D (5) E

Explanation / Answer

1. Titration of weak acid with strong base forms weak base at end point. So this weak base is the conjugate base of weak acid. Hence the solution has basic nature at end point but the base is weak base so pH is slightly greater than 7.

Therefore point D is the end point for the titration of weak acid.

2. Titration strong acid with base gives neutral solution at end point, so the solution has pH = 7 at end point.

Hence point C is the end point for the titration of strong acid.

3. If excess base is added after the end point then the solution is strong basic solution and its pH is greater than 11

Hence point E is the point for the addition of excess base.

4. Buffer solution is a combination of weak acid and its conjugate base. Buffer has pH which is greater than strong acid.

Hence point B is the best illustrates a buffer solution.

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