Titration Titrant Primary Standard I. Complete the table Write your answers in the answer booklet provided. Color change/end point Indicator detection Acid-Base (1) KHP Phenolphthalein (8) HCI (3) Phenolphthalein (9) Redox Complexometric KMnO4 EDTA (4) (5) (10) CaCO3 (6) (11) Precipitation (2) NaCl (7) Formation of brick red ppt (Mohr Method) Na2CO3 starch Fill in the table above with the choices from the answer bank that follows. You can select one choice more than once or not at all. If the answer is not found below, write "none". KSCN Fe3+ yellow to orange AgNO3 NaOH yellow green to pink K₂CrO4 Red to yellow pink to colorless KMnO4 formation of red complex deep blue to colorless colorless to pink/red AS2O3 KSCN EBT purple to colorless colorless to purple red to blue Na2C2O4 Cu Acid-Base Fluorescein Argentometric colorless to deep blue Volhard

Titration Titrant Primary Standard I. Complete the table Write your answers in the answer booklet provided. Color change/end point Indicator detection Acid-Base (1) KHP Phenolphthalein (8) HCI (3) Phenolphthalein (9) Redox Complexometric KMnO4 EDTA (4) (5) (10) CaCO3 (6) (11) Precipitation (2) NaCl (7) Formation of brick red ppt (Mohr Method) Na2CO3 starch Fill in the table above with the choices from the answer bank that follows. You can select one choice more than once or not at all. If the answer is not found below, write "none". KSCN Fe3+ yellow to orange AgNO3 NaOH yellow green to pink K₂CrO4 Red to yellow pink to colorless KMnO4 formation of red complex deep blue to colorless colorless to pink/red AS2O3 KSCN EBT purple to colorless colorless to purple red to blue Na2C2O4 Cu Acid-Base Fluorescein Argentometric colorless to deep blue Volhard

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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(A) 0.30 (B) 1.76 (C) 2.10 (D) 2.46 35. A sample of a washing powder that contains a mixture of Na₂CO3 and NaHCO3 is titrated with aqueous HCl and the following result is obtained: 26 pH 12 10 6 4 2 0 0 5 10 15 20 mL HCI added (A) 2 mol CO²: 1 mol HCO3 2- (B) 1 mol CO²; 1 mol HCO, (C) 1 mol CO2: 2 mol HCO3 (D) 1 mol CO32: 3 mol HCO3 25 Hudno ouenic id IGN: 30 What is the mole ratio of CO32 to HCO3 in the washing powder? 35 with
The following graph shows the pH curve for the titration of 25 mL of a 0.1 M monoprotic acid solution with a 0.1 M solution of a monoprotic base. 14 pH 12 10 8 6 4 2 0 0 5 10 15 20 25 30 35 40 45 50 mL of 0.1 M base added (1) The pH curve represents the titration of a (2) Choose a suitable indicator for the endpoint of the titration from the following pulldown list. 0 Malachite green Thymol blue Methyl orange Bromocresol green Methyl red Bromothymol blue Cresol red Phenolphthalein Thymolphthalein Alizarin yellow 0.2 1.8 pH 0 1 1.2 2 2.8 3 3.2 4.4 3.8 5.4 4 4.8 6.0 5 6.0 6 25 7.0 71 7 8.0 9.6 7.6 8.2 8 8.8 10.0 94 10.6 10.1 9 10 11 acid with a 12.0 12 13 14 base.
Question Completion Status: QUESTION 3 3. A weak acid was titrated using 0.20 M KOH. The pH at several volumes added was recorded and plotted as shown below. If 175 mg of the weak acid was used, what was the molar mass of the weak acid solution? pH vs Volume of KOH(aq) 13 12 11 10 6. 7. 6. 4. 3 4 5 6 8 9 10 mL KOH(aq) QUESTION 4
3 a) The Ka value for phenolphthalein is 8 x 10-10. What is the concentration of hydrogen ton when this indicator changes colour? b) What is the pH at end paint? c) From your pH curve, why is the assumption that end point equals equivalence point valid for phenolphthalein?
The half‑equivalence point of a titration occurs half way to the equivalence point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted. If 0.500 moles of a monoprotic weak acid (?a=8.9×10−5) is titrated with NaOH, what is the pH of the solution at the half‑equivalence point? pH= ( Please type answer note write by hend )
For each scenario below, select the color of the solution using the indicator thymol blue during the titration. When you first add indicator to your Na2CO3 solution, the solution is basic (pH ~10), and the color is [Select] At the equivalence point for the titration, the moles of added HCI are equal to the moles of Na2CO3. One drop (or less!) past this is called the endpoint. The added HCI begins to titrate the thymol blue indicator itself. At the endpoint, the indicator color is [Select] When you weren't paying attention and added too much HCI (~12 mL extra), the color is [Select] When you really weren't paying attention and reached the second equivalence point of Na2CO3, the color is ✓ [Select] blue yellow red orange green Question 9
What ratio of base to acid is needed to make a buffer with formic acid, HCOOH, and potassium formate, KHCOO buffer with pH = 3.76? Enter the ratio as a decimal
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Read sec. 14.7 2, then calculate the volume at equivalence and the pH at each of the following volumes of titrant for the titration of a 75.00 mL of a 0.049 mol L1 solution of nitrous acid (pKa = 3.37) titrated with 0.198 mol L' sodium hydroxide. %3D Ve = 18.6 mL VOH pH VOH 7.05 pH : VOH = = 12.1 pH %3D VOH = Ve %3D pH %3D Von = 27.8 pH = VoH = 55.7 pH Submit Question Jump to Answer