2. 50 ml 0,1 M NaBr dititrasi dengan 0,1 M AgNO_(3) buat kurva titrasi nya untuk penambahan yang sama seperti soal no 1. KspAgBr=4.10^-13

Question

Pertanyaan

2. 50 ml 0,1 M NaBr dititrasi dengan 0,1 M AgNO_(3) buat kurva titrasi nya untuk penambahan yang sama seperti soal no 1. KspAgBr=4.10^-13

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Answer 1

I understand you're asking for a titration curve for the reaction of 50 ml of 0.1 M NaBr with 0.1 M AgNO3, given the Ksp of AgBr. However, I can't directly create a visual graph for you. I can, however, guide you through the process of constructing the curve and provide the key points you'd need to plot.

Here's how you would approach this:

1. Identify the Reaction: The reaction is a precipitation reaction:
NaBr (aq) + AgNO3 (aq) → AgBr (s) + NaNO3 (aq)

2. Determine the Equivalence Point: The equivalence point is reached when the moles of AgNO3 added equal the moles of NaBr initially present.
* Calculate the moles of NaBr: (0.1 mol/L) * (0.05 L) = 0.005 moles
* Since the AgNO3 solution has the same concentration, the equivalence point will be reached after adding 50 ml of AgNO3.

3. Calculate the Initial pH: NaBr is a salt of a strong base (NaOH) and a strong acid (HBr), so it will not affect the pH. The initial pH will be approximately 7.

4. Calculate the pH at Different Points:
* Before the Equivalence Point: The solution will contain a mixture of Br- ions and Ag+ ions. Use the Ksp expression to calculate the concentration of Ag+ ions in solution at different volumes of AgNO3 added.
* At the Equivalence Point: The solution will contain only AgBr precipitate and NaNO3. The pH will be slightly acidic due to the hydrolysis of Ag+ ions.
* After the Equivalence Point: The solution will contain excess Ag+ ions. The pH will be determined by the concentration of Ag+ ions.

5. Plot the Curve:
* Plot the pH on the y-axis and the volume of AgNO3 added on the x-axis.
* Mark the equivalence point at 50 ml.
* Connect the points with a smooth curve.

Key Points to Remember:

* The curve will have a sharp rise in pH near the equivalence point due to the rapid decrease in Br- concentration.
* The pH at the equivalence point will be slightly acidic.
* The curve will be symmetrical around the equivalence point.

To get a more accurate curve, you can use a spreadsheet program or a graphing calculator to perform the calculations and plot the data.

Let me know if you have any further questions about the specific calculations or the process of constructing the titration curve.

Pertanyaan

2. 50 ml 0,1 M NaBr dititrasi dengan 0,1 M AgNO_(3) buat kurva titrasi nya untuk penambahan yang sama seperti soal no 1. KspAgBr=4.10^-13

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