EXPERIMENT 2: CHEMICAL EQUILIBRIUM Molarity of sodium hydroxide solution =_ _1.4679 Average titre Ke (mL) Vial NaOH titre number (mL) Initial Final Net 1 0.16 10.86 NOT 10.86 21.46 APPLICABLE 3 0.05 25.95 0.07 26.17 5 0.03 16.63 6. 16.63 32.26 7 0.09 25.19 0.07 24.95 Remarks for calculations 1. The average volume of NaOH solution from vials 1 and 2 represents the amount of HCl added. This volume has to be subtracted from the average volume of NaOH solution for vials 4,5,6,7, and 8 to get the volume of NaOH that corresponds to the acetic acid alone. 2. The concentration of water is included in the equilibrium calculations 3. The amount of water in each vial is equal to what we added plus the water that came with the HCI. CALCULATIONS

EXPERIMENT 2: CHEMICAL EQUILIBRIUM Molarity of sodium hydroxide solution =_ _1.4679 Average titre Ke (mL) Vial NaOH titre number (mL) Initial Final Net 1 0.16 10.86 NOT 10.86 21.46 APPLICABLE 3 0.05 25.95 0.07 26.17 5 0.03 16.63 6. 16.63 32.26 7 0.09 25.19 0.07 24.95 Remarks for calculations 1. The average volume of NaOH solution from vials 1 and 2 represents the amount of HCl added. This volume has to be subtracted from the average volume of NaOH solution for vials 4,5,6,7, and 8 to get the volume of NaOH that corresponds to the acetic acid alone. 2. The concentration of water is included in the equilibrium calculations 3. The amount of water in each vial is equal to what we added plus the water that came with the HCI. CALCULATIONS

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

ChapterA1: Evaluation Of Analytical Data

Section: Chapter Questions

Problem A1.22QAP

See similar textbooks

Similar questions

Determine the molar solubility (moles/L) of Ni(OH)2. Ksp = 2.0 x 10-15 Express the answer to 3 sig. figs.
Table 1: Temp vs. solubility data of ammonium chloride. Test tube g NH4Cl/10 mL H2O Crystallization temp. (ºC) 1 1.0 g/10 mL H2O 10 oC 2 1.8 g/10 mL H2O 20 oC 3 2.9 g/10 mL H2O 40 oC 4 3.8 g/10 mL H2O 65 oC 5 4.4 g/10 mL H2O 95 oC Use the table to plot a solubility curve for ammonium chloride on the graph provided below. For the best fit line, use a smooth curve. "Mass of Solute per 100 mL of H2O," should be written on the y-axis (use increments of 2g for every box). "Temperature (°C)" should be written on the x-axis (use increments of 10 °C for every 2 boxes).
Complete the following: 1. Random error, also called _________arises from the effects of uncontrolled variables in the measurement. 2. The ____________,measures how closely the data are clustered about mean. 3. The chemical equilibrium in which all the reactants and products are in the same phase are called____________. 4. Reaction that go to completion and never proceed in the reverse direction are said to be_____________ 5. The equation for buffer is the__________equation. 6. A ___________solution is one that resists changes in pH when small quantities of an acid or an alkali added to it. 7. __________is the pH of the pure, neutral and polyprotic
If 500mL of 0.10M Ca2+ is mixed with 500mL of 0.10M SO42-, what mass of calcium sulfate will precipitate? Ksp for CaSO4 is 2.40 • 10-5. express answer to 3 significant figures. And include units.
Write the equilibrium expression for Ca2+ + 2Cl- ⇌ CaCl2 with activity coefficients. Pls, answer in the easiest possible solution. Thank you
The concentration of a pure solid is left out of a equilibrium constant expression but a pure liquid is included
4.What is the molality of HCl in an aqueous solution in which the mole fraction of HCl is 0.220?A. 15mB. 282mC. 30.9mD. 15.7m.
1.1The Ksp of Ca3 (PO4 ) 2 is 1.3 × 10−26 . Estimate the solubility of this salt in units of g. L −1 . You must show any reaction equation(s) that you may think are necessary. 1.2 If a sample of solid Ca3(PO4)2 is stirred into exactly one litre of a 0.550M solution of Na3PO4, how will the solubility of the salt compare with the answer that you have obtained in question 1.1? Explain you answer in a short sentence.
Nitrosyl chloride, NOCl, dissociates on heating as shown below. When a 1.50 gram sample of pure NOCl is heated at 350 oC in a volume of 1.00 liter, the percent dissociation is found to be 57.2%. What is the quilibbrium constant?
Lactic acid, HC3H5O3, is a monoprotic acid that dissociates in aqueous solution, as represented by the equationabove. Lactic acid is 1.66 percent dissociated in 0.50 M HC3H5O3 at 298 K. For parts (a) through (d) below,assume the temperature remains at 298 K.HC3H5O3(aq) <--> H+ (aq) + C3H5O3-(aq) d. A 100. mL sample of 0.10 M HCl is added to 100. mL of 0.50 M HC3H5O3. Calculate the molarconcentration of lactate ion, C3H5O3-, in the resulting solution.
How do I do the calculation(s) here to determine the information I will need to enter/graph in Excel?! (I can do the graph, mainly need help with the (chem-) math). Using the following information, draw the species diagram for the aqueous carbon dioxide bicarbonate ion-carbonate system at 25 °C: [H2CO3] + [HCO3-] + [CO32- ] = C K1 = [HCO3-] [H+] / [H2CO3] K2 = [CO32-] [H+] / [HCO3-]
The following data table indicates the solubility of a substance. By examining the data presented, predict the solubility of the substance at 50 oC. Temperature (oC) Solubility (mM) 5 5.00 15 4.35 25 3.70 35 3.05 45 2.40