QUESTION 23 Citric acid, C6H807, is a triprotic acid. Which of the following is the equation corresponding to the Ka2 of citric acid? O C6H807 (aq) + H₂O(l) <-> C6H707 (aq) + H30+ (aq) O C6H607²- (aq) + H₂0(1) <-> C6H507³- (aq) + H3O+ (aq) O C6H707 (aq) + H₂O(l) <-> C6H6O72- (aq) + H30+ (aq) O C6H807 (aq) + 2 H₂O(l) <-> C6H6O72- (aq) + 2 H30+ (aq) QUESTION 24 When using an "ice table" to solve an acid-base equilibrium problem, the [H3O+] used to calculate the pH will be: O the equilibrium concentration the initial concentration the change in concentration. Can be any of the three QUESTION 25 A certain triprotic acid has three Ka values listed below. Which one will be Ka1? O 6.5 x 10-3 O 5.5 x 10-5 O 2.1 x 10-10 O Not enough information to determine which is which.

QUESTION 23 Citric acid, C6H807, is a triprotic acid. Which of the following is the equation corresponding to the Ka2 of citric acid? O C6H807 (aq) + H₂O(l) <-> C6H707 (aq) + H30+ (aq) O C6H607²- (aq) + H₂0(1) <-> C6H507³- (aq) + H3O+ (aq) O C6H707 (aq) + H₂O(l) <-> C6H6O72- (aq) + H30+ (aq) O C6H807 (aq) + 2 H₂O(l) <-> C6H6O72- (aq) + 2 H30+ (aq) QUESTION 24 When using an "ice table" to solve an acid-base equilibrium problem, the [H3O+] used to calculate the pH will be: O the equilibrium concentration the initial concentration the change in concentration. Can be any of the three QUESTION 25 A certain triprotic acid has three Ka values listed below. Which one will be Ka1? O 6.5 x 10-3 O 5.5 x 10-5 O 2.1 x 10-10 O Not enough information to determine which is which.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter24: Introduction To Spectrochemical Methods

Section: Chapter Questions

Problem 24.18QAP

See similar textbooks

Similar questions

A weight of 0.50 g was taken impure container containing sodium carbonate and bicarbonate. Dissolved in water and then crushed with hydrochloric acid (0.1 N), the burette reading game was at the endpoint of phenolphthalein of 10.5 ml and at the end point of the orange methylation point 30.1 ml. The percentage of sodium carbonate was in ................. knowing that the weights are: Na: 23, C: 12, O: 16
Hello, I was hoping for some help with the prelaboratory questions for Analytical Chemistry. I am pretty sure I got number one, but I was very confused about the "second endpoint" calculations and I am pretty sure I have calculated the percentage wrong. These are the equations we are given to work with and the questions are below. Thanks in advance! Eq. 2 CO32- + H+ Û HCO3- (bicarbonate ion) Eq. 3 HCO3- + H+ Û H2CO3 (carbonic acid) Eq. 4 However: H2CO3 (aq) Û CO2 (g) + H2O How much concentrated HCl acid is required to make 0.500 L of a 0.100 M HCl solution? One can calculate the Molarity (M) of the HCl from the weight percentage on the reagent bottle (which is usually 37.0% (w/w) with a density of 1.19 g/mL). A weight of 1.300 g of sodium carbonate (MW = 105.989 g/mol) is dissolved in 250.0 mL water. If a 25.00 mL aliquot of the sodium carbonate solution is placed into an E-flask and titrated with 0.1034 M HCl, what should be the volume of HCl to reach the second…
Determine the volume of glacial acetic acid to prepare 500 ml of a 0.020 M acetic acid solution (glacial acetic acid; strength 99.8%, density 1.05 g/ml, MW 60.05 g/mole).
In the spectrofluorometric analysis of quinine, which of the following statements/phrases can be considered a factor level? A. concentration of 2ppm of iodide B. concentration of quenchers C. use of quenchers D. use of iodide
Calculate the volume in milliliters of 0.362 M KOH necessary to titrate 28.38 mL of 0.279 M diprotic sulfuric acid, H2SO4, to a phenolphthalein end-point. Report the answer to a precision of 2 decimal places.
Suppose i want to prepare or manufacture 1 litter of Acid free bike or car washing shampoo. In the preparation process can i use SLES instead of SLS? Please answer at your own words.
What is the percent magnesium hydroxide, if a sample of magnesia magma weighing 5.2430g when dissolved in 25 mL of 0.9915 N H2SO4 required 9.85 mL of 1.4102 N NaOH to titrate the excess acid? Round to 2 decimal point; Answer should be with the correct unit.
I was told by another expert that they could have only answered 3 bollet points each and to upload the rest This is me uploading the rest. Please do not reject it.
If one mixes 50cm³ of EtOH and 50cm³ of H2O at room temperature; will the total volume of the solution be 100.0 cm³? Justify answer with appropriate calculations and explanations
“Oh man, our supply person didn’t put in our order for 70% alcohol. All we have are liters of 100% on hand. We need 20 liters of 70% alcohol. How many liters of 100% alcohol will we need? And how much water will we dissolve it in? “Uh oh…this dye concentration of light green is 90%, but our current light green, which we just ran out of, has a concentration of 70%. We need our counterstain to be consistent, so what can we do to make 500 mL of 1% light green? How much of the new dye will we need, and how much water will we dissolve it in?”
What is the concentration of C6H5OHCOOH in a 0.1185 M C6H5OHCOONa? Answers are expressed in molarity. Ka for C6H5OHCOOH is 1.05e-3.
The stock erythrosine B solution is 8.5 × 10-5 M. Calculate the volume of this solution that you must pipet into a 50-mL volumetric flask, which, when diluted to mark with deionized water, will give a final concentration of 1.7 × 10-5 M. Show your calculation setup.