19. According to Arrhenius, which of the following ions are produced when an acid is added to water? a) hydrogen ions b) hydroxide ions c) metal ions d) halide ions 20. Which of the following terms describes a sudden change in an observable property that occurs during a titration? (a) endpoint (b) overshot reading (c) equivalence point (d) stoichiometry

19. According to Arrhenius, which of the following ions are produced when an acid is added to water? a) hydrogen ions b) hydroxide ions c) metal ions d) halide ions 20. Which of the following terms describes a sudden change in an observable property that occurs during a titration? (a) endpoint (b) overshot reading (c) equivalence point (d) stoichiometry

Chemistry for Today: General, Organic, and Biochemistry

9th Edition

ISBN:9781305960060

Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen

Publisher:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen

Chapter9: Acids, Bases, And Salts

Section: Chapter Questions

Problem 9.90E

See similar textbooks

Similar questions

Describe how the amount of sodium hydroxide in a mixture can be determined by titration with hydrochloric acid of known molarity.
An acid is titrated with NaOH. The following beakers are illustrations of the contents of the beaker at various times during the titration. These are presented out of order. Note: Counter-ions and water molecules have been omitted from the illustrations for clarity. (a) (b) (c) (d) (e) a. Is the acid a weak or strong acid? How can you tell? b. Arrange the beakers in order of what the contents would look like as the titration progresses. c. For which beaker would pH = pKa? Explain your answer. d. Which beaker represents the equivalence point of the titration? Explain your answer. e. For which beaker would the Ka value for the acid not be necessary to determine the pH? Explain your answer.
Consider the following two acids: In two separate experiments the pH was measured during the titration of 5.00 mmol of each acid with 0.200 M NaOH. Each experiment showed only one stoichiometric point when the data were plotted. In one experiment the stoichiometric point was at 25.00 mL added NaOH, and in the other experiment the stoichiometric point was at 50.00 mL NaOH. Explain these results. (See Exercise 113.)
Consider the nanoscale-level representations for Question 111 of the titration of the aqueous strong acid HA with aqueous NaOH, the titrant. Water molecules and Na+ ions are omitted for clarity. Which diagram corresponds to the situation: (a) After a very small volume of titrant has been added to the initial HA solution? (b) Halfway to the equivalence point? (c) When enough titrant has been added to take the solution just past the equivalence point? (d) At the equivalence point? Nanoscale representations for Question 111.
You are given the following acidbase titration data, where each point on the graph represents the pH after adding a given volume of titrant (the substance being added during the titration). a What substance is being titrated, a strong acid, strong base, weak acid, or weak base? b What is the pH at the equivalence point of the tiration? c What indicator might you use to perform this titration? Explain.
A 2.500-g sample of a mixture of sodium carbonate and sodium chloride is dissolved in 25.00 mL of 0.798 M HCl. Some acid remains after the treatment of the sample. a Write the net ionic equation for the complete reaction of sodium carbonate with hydrochloric acid b If 28.7 mL of 0.108 M NaOH were required to titrate the excess hydrochloric acid, how many moles of sodium carbonate were present in the original sample? c What is the percent composition of the original sample?
Follow the directions of Question 64. Consider two beakers: Beaker A has a weak acid(K a=1105). Beaker B has HCI. The volume and molarity of each acid in the beakers are the same. Both acids are to be titrated with a 0.1 M solution of NaOH. (a) Before titration starts (at zero time), the pH of the solution in Beaker A is the pH of the solution in Beaker B. (b) At half-neutralization (halfway to the equivalence point), the pH of the solution in Beaker A the pH of the solution in Beaker B. (c) When each solution has reached its equivalence point, the pH of the solution in Beaker A the pH of the solution in Beaker B. (d) At the equivalence point, the volume of NaOH used to titrate HCI in Beaker B the volume of NaOH used to titrate the weak acid in Beaker A.
Consider 1.0 L of an aqueous solution that contains 0.10 M sulfuric acid to which 0.30 mole of barium nitrate is added. Assuming no change in volume of the solution, determine the pH, the concentration of barium ions in the final solution, and the mass of solid formed.
One half liter (500. mL) of 2.50 M HCl is mixed with 250. mL of 3.75 M HCl. Assuming the total solution volume after mixing is 750. mL, what is the concentration of hydrochloric acid in the resulting solution? What is its pH?
Students are given a solution of K2CO3, but its concentration is unknown.Two students take different approaches to determine its concentration:Student X took 20.00mls of the K2CO3 solution and added 20.00 mls of0.2000 M HCl in a conical flask and left the solution stirring for half an hour.The solution in the conical flask was then titrated with 0.1500 M NaOH.Repeating this procedure gave an average titre of 20.05 mls.Student Y took 20.00mls of the K2CO3 solution into a conical flask and titratedit directly against 0.2000 M HCl. Repeating this procedure gave an averagetitre of 3.55 mls.(i) Write the appropriate equations for the reactions above.(ii) Determine the concentration of the K2CO3 solution from the data obtainedby Student X and by Student Y. Express your answers as M and g/L.(iii) Both methods give different values for the final concentration. Explain thedifference, highlighting the more accurate method.
Which of the following compounds is not soluble in water? Select one: O NazSO4 O PDF2 O LizSO4 O NHẠNO3
6.) It takes 22.5 mL of a 1.25 M KOH stock solution to reach the equivalence point in the titration of 10.0 mL, of hydrochloric acid (HCI) of unknown concentration. a) What is the balanced formula equation? b) What is the net ionic equation, and if you had to classify this reactipp, what war, gou classify it as? c) What is the concentration of the hydrochloric acid solution you start with?