Question

Table 3: Sodium Acetate Data

Sodium Acetate (g)	Molarity of Sodium Acetate (Step 7)
4.0 g	0.4876 M

Table 4: Buffer Solutions and pH Readings for Beakers A, B, C, D, and E

Buffer	mL of Acetic Acid	mL of Sodium Acetate	pH measured
A	5	5	4.3
B	5	1	3.6
C	10	1	3.4
D	1	10	5.3
E	1	5	5.0

Post-Lab Questions

1. What are the calculated pH values for the buffers (A,B,C,D and E) that you measured in Table 4 and describe the process you used to calculate the molarity of your solution.
2. If you did not use different pipettes for the sodium acetate solution and the acetic acid solution describe all of the potential errors that could have occurred.

Process to calculate molarity of solution: Use your metal spatula to weigh 4.0 g of sodium acetate. Record the exact mass of the sodium acetate in Table 3. 4. Transfer the sodium acetate into a 100 mL beaker. 5. pour 100 mL of distilled water into the beaker to dissolve the sodium acetate. Calculate the molarity of this solution. Record the molarity (moles of solute/liters of solution) in Table 3. (The molar mass of NaC2 H3 O2 is 82.03 g.)