• example: Titration of 100.0 mL of 0.05 M NH3 with 0.10 M HCI
• Calculate equivalence point volume
• Calculate pH at the following volumes of acid added
• 10.0 mL
• 25.0 mL
• 50.0 mL
• 60.0 mL
• Check your answers against the titration curve
• example: Titration of 100.0 mL of 0.05 M NH3 with 0.10 M HCI • Calculate...
4) Calculate the pH at the equivalence point for the titration below: 150 mL 0.10 M HCI against 75 mL of 0.20 M NH3 4) Calculate the pH at the equivalence point for the titration below: 150 mL 0.10 M HCI against 75 mL of 0.20 M NH3
3. Weak Base versus Strong Acid Derive a titration curve for the titration of 50.0 mL of 0.10 M NH3 (Kb=1.8 x 10-5) with 0.25 M HCl. Calculate the pH for the following volumes of HCl (0 mL, 10 mL, 15 mL, 20 ml, 25 mL, 30 mL, 35 mL). Volume of HCI, in milliters 0 pH (a) 10 15 (d) 20 |(f) 25 30 35 (g) pH at the equivalence point Specify your choice of indicator
Sketch a pH titration curve if 100.0 mL of 0.125 M NH3 solution is titrated with 0.15M HCl. Note the following three items on the curve. K, for NHa 1.8 x 105 pH= Calculate the starting pH (no HCl added) vol (mL)= Calculate the volume of HCl added to reach the equivalence point pH = Calculate the pH at the equivalence point.
Titration of 25.0 mL of 0.10 M NH3 with 0.10 M HCI 14 12 10 4 2 0 0 5 10 15 20 25 30 35 40 45 50 Volume of HCI (mL) What information is needed to determine the pH at the equivalence point? NH3(aq) + H3O (aq) -> NH4 (aq) + H2O(2) A. [NH4] and its Ka value B. [NH3] and its K, value. C. [NH3l, [NH41 and its Ka value. D. INH41, INH3l and its Kb value.
Consider the titration of 100.0 mL of 0.100 M methylamine (CH3NH2) with 0.500 M HNO3. Calculate the pH at the following volumes of acid added. For CH3NH3+, pKa = 10.632 (a) Find the equivalence point volume. (b) 0 mL (c) 9.0 mL (d) 10.0 mL (e) 20.0 mL (f) 30.0 mL
Consider the titration of 100.0 mL of 0.100 M /hydrazine () by 0.200 M . Assume that hydrazine is monoprotic. Determine the following: a. pH before any HNO3 is added b. volume of acid to reach the equivalence point c. pH when 20.0 mL of HNO3 has been added d. pH when 25.0 mL of HNO3 has been added e. pH when 40.0 mL of HNO3 has been added f. pH when 50.0 mL of HNO3 has been added g....
Consider the titration of 40.0 mL of 0.200 M HCIO4 by 0.100 M KOH. Calculate the pH of the resulting solution after the following volumes of KOH have been added. a. 0.0 mL pH = b. 10.0 mL pH = c. 60.0 mL pH = d. 80.0 mL pH = e. 110.0 mL pH = Consider the titration of 100.0 mL of 0.200 M acetic acid (Ka = 1.8 x 10-5) by 0.100 M KOH. Calculate the pH of the...
7. In the titration of 10.0 mL of 0.500 M NH3 with 0.5 M HCI, calculate the pH of the following and sketch the titration curve. Kb 1.8 x 10 f. Before the titration starts g. After addition of 2.5 ml of HCl h. After addition of 5.0 ml of HCI i. After addition of 10.0 ml of HC
In a titration, 25 mL of 0.10 M weak diprotic acid solution was titrated by 0.10 M sodium hydroxide, NaOH, and produced a titration curve listed below. (20 points total) 14,0 3. 12.0 10.0 8.0 pH 6.0 4.0 2.0 10.0 5.0 20.0 30.0 15.0 25.0 Volume of 0.100 M NaOH, mL The acid used in above titration is a weak diprotic acid. Briefly explain how you know it's diprotic from looking at the titration curve and how you know a...
9.& 10.) A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Determine the pH of the solution at each addition of the HNO3. The Kb of NH3 is 1.8 x 10-5 (Yes, you may use the back or attach sheets to show your work.) Addition of HNO3 pH 150 200 Then sketch the titration curve for this titration. Make sure to label your axes (including numerically!), to indicate the equivalence point (and whether it is...