Graph 2: Another Groups\'s Data 14 12 t0 10 20 30 40 50 Analysis of graph TWO 1.

Question

Graph 2: Another Groups's Data 14 12 t0 10 20 30 40 50 Analysis of graph TWO 1. Using the graph, estimate the pH of the substance in the flask before titration, pH 2. What acid is actually in the beaker before titration? 3. What should the pH of this solution be at the equivalence point if the base concentration is 0.1 M and the acid is it a weak acid or a strong acid? concentration is 0.1 M? Show Calculation 4. According to the graph, what volume of titrant was used to reach the equivalence point? 5. According to the graph, what volume should be used to reach the half-titration point? 6. Is this a buffer solution at the half-titration point why? Or why not? 7. If the system is a buffer at the half titration point, determine the Ka (possible acids titrated: HCl or HC Hi0) not write NOT A BUFFER REGION Show Calculation [If a buffer):

Explanation / Answer

The given graph is a plot of pH (y-axis) vs Volume of solution (x-axis).

So the data obtained from the graph is as follows:

Ans 1: pH = 2

Ans 2: The acid in flask before titration is a strong acid and can be HCl

Ans 3: pH = 7, because at equivalence point both acid and base have been titrated completely.

Ans 4: As per data, 22ml of titrant was used to reach equivalence point

Ans 5: Half equivalence point is the point where the titration has reached half of its equivalence point. Thus half equivalence point is at 22/2 = 11ml.

Ans 6: No, it is not a buffer solution because pH of solution is acidic in nature.

Ans 7: it is not a buffer

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