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Which of the following statements is true about the bisulfate anion HSO4-? Select one: 0 a....
Which of the following statements is not true for the salt LICN? Select one: O a....
Which of the following statements is not true for the salt LICN? Select one: O a. The conjugate acid of CN is HCN. O b. The K expression for CN" in water is: K NONIONI . c. When CN is added to water, the following reaction takes place: CN( +.001) - ON-(q) + HCN (4) O d. LiCN is a basic salt. O e. When CN' is added to water, the following reaction takes place: CN(0) + 11.00 - .0...
Which of the following statements about the acetate anion (CH,COO ) is false? Select one: O a. The acetate anion (CH,CO...
Which of the following statements about the acetate anion (CH,COO ) is false? Select one: O a. The acetate anion (CH,COO ) is basic. o b. The two carbon to oxygen bonds in the acetate anion (CH, COO ) is are the same length o C. The structure of the acetate anion (CH,COO ) is well be represented by two resonance structures. O d. There is one carbon to oxygen double bond in the acetate anion (CH,COO). e. The acetate...
0, Which of the statements below about an acid-base buffer solution is/are true? IIt can be...
0, Which of the statements below about an acid-base buffer solution is/are true? IIt can be prepared by combining a strong acid with a salt of its conjugate base VII. It can be prepared by combining a weak acid with a salt of its conjugate base IID It can be prepared by combining a weak base with its conjugate acid V. The pH of a buffer solution does not change when the solution is diluted. A buffer solution resists changes...
Which one of the following statements about salt solutions is true? a. A basic salt is...
Which one of the following statements about salt solutions is true? a. A basic salt is made by combining an acidic cation and neutral anion. b. An acidic salt is made by combining a neutral cation and acidic anion. c. A neutral salt is made by combining a basic cation and acidic anion. d. An acidic salt is made by combining an acidic cation and neutral anion.
17. The hydrogen sulfate or bisulfate ion HSO4 can act as either an acid or a...
17. The hydrogen sulfate or bisulfate ion HSO4 can act as either an acid or a base in water solution (a) Show the reaction where HSO4 acts an acid (Ka) (b) Show the reaction where HSO4 acts a base (Kb)? 18. Show the chemical equilibrium processes for Kal and Ka2 for diprotic H2SO3 and justify which Ka is the larger value 19. A buffer contains a weak acid, HA, that is twice the concentration of its conjugate base, A. If...
Which statement is correct about the anion resins? Select one: a. anions adsorbed onto the anion...
Which statement is correct about the anion resins? Select one: a. anions adsorbed onto the anion resins can be regenerated by aqueous base solutions; O O b. all options are correct; c. in the anion resins, the stationary phase is a high molecular weight polymer containing hydroxide ions which can be exchanged with any other anions; d. the typical ion-exchange groups in anion resins is quaternary ammonium groups; O
Which of the following statements about osmoregulation are NOT true? Select one: a. Osmoregulators can control...
Which of the following statements about osmoregulation are NOT true? Select one: a. Osmoregulators can control their internal osmolarity independent of external environment and thus maintain a constant osmotic pressure in the blood b. Marine fish lose more water from the gills and body surface and excrete less water from the kidneys c. Freshwater fish lose more water from the gills and body surface and excrete less water from the kidneys d. Marine birds have a transport epithelium process that...
Which of the following statements is true about the compounds BH3, BF3, NH3, and HCI? Select...
Which of the following statements is true about the compounds BH3, BF3, NH3, and HCI? Select one: O a. Only HCl is a Brønsted-Lowry acid. O b. All of them are Brønsted-Lowry bases. O c. BF3, NH3 and HCl are Brønsted-Lowry bases. O d. BH3 and BF3 are Brønsted-Lowry acids. o e. All of them are Brønsted-Lowry acids.
Which of the following is INCORRECT for Brønsted-Lowry acids and bases? Select one: O a. Water...
Which of the following is INCORRECT for Brønsted-Lowry acids and bases? Select one: O a. Water reacts with itself to form hydronium and hydroxide, a process called autoprotolysis. O b. NH4 is the conjugate acid of the weak base NH3. c. When an acid and a base react, the acid and base neutralize each other and form a salt. Od. Acids are proton donors. e. CH3CN is a protic solvent.
Which of the following statements about explicit costs is true? Select one: a. They are the...
Which of the following statements about explicit costs is true? Select one: a. They are the only costs that matter to business owners b. They usually exceed implicit costs. Oc. They are difficult to measure. O d. They appear on the firm's balance sheet.
Which of the following statements is not true for the salt LICN? Select one: O a. The conjugate acid of CN is HCN. O b. The K expression for CN" in water is: K NONIONI . c. When CN is added to water, the following reaction takes place: CN( +.001) - ON-(q) + HCN (4) O d. LiCN is a basic salt. O e. When CN' is added to water, the following reaction takes place: CN(0) + 11.00 - .0...
Which of the following statements about the acetate anion (CH,COO ) is false? Select one: O a. The acetate anion (CH,COO ) is basic. o b. The two carbon to oxygen bonds in the acetate anion (CH, COO ) is are the same length o C. The structure of the acetate anion (CH,COO ) is well be represented by two resonance structures. O d. There is one carbon to oxygen double bond in the acetate anion (CH,COO). e. The acetate...
0, Which of the statements below about an acid-base buffer solution is/are true? IIt can be prepared by combining a strong acid with a salt of its conjugate base VII. It can be prepared by combining a weak acid with a salt of its conjugate base IID It can be prepared by combining a weak base with its conjugate acid V. The pH of a buffer solution does not change when the solution is diluted. A buffer solution resists changes...
17. The hydrogen sulfate or bisulfate ion HSO4 can act as either an acid or a base in water solution (a) Show the reaction where HSO4 acts an acid (Ka) (b) Show the reaction where HSO4 acts a base (Kb)? 18. Show the chemical equilibrium processes for Kal and Ka2 for diprotic H2SO3 and justify which Ka is the larger value 19. A buffer contains a weak acid, HA, that is twice the concentration of its conjugate base, A. If...
Which statement is correct about the anion resins? Select one: a. anions adsorbed onto the anion resins can be regenerated by aqueous base solutions; O O b. all options are correct; c. in the anion resins, the stationary phase is a high molecular weight polymer containing hydroxide ions which can be exchanged with any other anions; d. the typical ion-exchange groups in anion resins is quaternary ammonium groups; O
Which of the following statements is true about the compounds BH3, BF3, NH3, and HCI? Select one: O a. Only HCl is a Brønsted-Lowry acid. O b. All of them are Brønsted-Lowry bases. O c. BF3, NH3 and HCl are Brønsted-Lowry bases. O d. BH3 and BF3 are Brønsted-Lowry acids. o e. All of them are Brønsted-Lowry acids.
Which of the following is INCORRECT for Brønsted-Lowry acids and bases? Select one: O a. Water reacts with itself to form hydronium and hydroxide, a process called autoprotolysis. O b. NH4 is the conjugate acid of the weak base NH3. c. When an acid and a base react, the acid and base neutralize each other and form a salt. Od. Acids are proton donors. e. CH3CN is a protic solvent.
Which of the following statements about explicit costs is true? Select one: a. They are the only costs that matter to business owners b. They usually exceed implicit costs. Oc. They are difficult to measure. O d. They appear on the firm's balance sheet.
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