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Part A: 50 mL of 2.0 M acetic acid (CH3COOH) was titrated with 1.0 M NaOH. What is the pH at the equivalence point of this titration? The ionization constant is 1.8 × 10−5. 1. 7.00 2. 9.52 3. 9.28 4. 9.20 5. 10.52 Part B: A 200 mL sample of 0.5 M N2H4 (hy- drazine) is titrated to its equivalence point with200mLof0.5MHCl. IftheKb ofN2H4 is 2.5 × 10−6, what is the pH of the solution at the equivalence point? 1. 8.5 2. 4.5 3. 1.5 4. 7.0

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Part A: 50 mL of 2.0 M acetic acid (CH3COOH) was titrated with 1.0 M NaOH. What is the pH at the equivalence

point of this titration? The ionization constant is 1.8 × 10−5.

1. 7.00 2. 9.52 3. 9.28 4. 9.20 5. 10.52 

Part B: A 200 mL sample of 0.5 M N2H4 (hy- drazine) is titrated to its equivalence point with200mLof0.5MHCl. IftheKb ofN2H4 is 2.5 × 10−6, what is the pH of the solution at the equivalence point?

1. 8.5 2. 4.5 3. 1.5 4. 7.0 

 
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