please explain and show work Solution a. 3.35 b. 5.62 c. 2.85 d.4.88 5- The foll

Question

please explain and show work

Solution a. 3.35 b. 5.62 c. 2.85 d.4.88 5- The following curve corresponds to the titration of diprotic acid with sodium hydroxide 1400 T 12.00 10.00 8.00 6.00 4 00 2.00 o.oo 0.00 0.00 500 10.00 15.00 20.00 2500 30.00 3500 40.00 45.00 50.00 Volume of NaOH (mL a.- Determine the 2 values of the pKa pKal a. 1.0 b.-3.0 c.-4.00 pKa2- a. 4.0 b. 10.0 c. 6.0 b.-Determine the pH and NaOH volume for both neutralizations points First neutralization pH- a. 6 b. 4.0 c. 6.0 Volume a. 21 b. 35 c. 15 second neutralization pH a. 12 b. 6 c. 8.8 Volume a. 42 b-70 c. 35

Explanation / Answer

(5)

(a)

pKa1 = 3, pKa2 = 6

pKa is the pH value at halfway of the equivalence point.

(b)

First neutralization: pH = 6, Volume = 21 mL

Second neutralization: pH = 8.8, Volume = 42 mL

Hope this helps !

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