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Author Archives: Anonymous

Which of the following is the correct Henderson-Hasselbalch…

Which of the following is the correct Henderson-Hasselbalch equation?A. pH = pKa − log([A⁻]/[HA])B. pH = pKa + log([A⁻]/[HA])C. pOH = pKa + log([HA]/[A⁻])D. pH = log([H⁺])

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23. Calculate the solubility product constant for aluminum h…

23. Calculate the solubility product constant for aluminum hydroxide (Al(OH)3. Its molar solubility is     2.9 x 10–9 mole per liter at 25°C.           (a) 9.8 x 10–26                        (b) 4.9 x 10–26                        (c) 7.1 x 10–35           (d) 2.1 x 10–34                        (e) 1.9 x 10–33

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A 0.10 M solution of ammonium chloride (NH₄Cl) is prepared….

A 0.10 M solution of ammonium chloride (NH₄Cl) is prepared. Given that Kb for NH₃ is 1.8 × 10⁻⁵, what is the approximate pH of the solution?A. 4.63 B. 7.00 C. 9.37 D. 11.13Hint: NH₄⁺ is a weak acid. First calculate Ka = Kw/Kb.

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9. Given that the Ka for gallic acid, HC7H5O5, is 4.57 x 10-…

9. Given that the Ka for gallic acid, HC7H5O5, is 4.57 x 10-3, what is the Kb for sodium gallate, NaC7H5O5?              a) 4.57 x 10-3        b) 2.19 x 10-12           c)5.43 x 10-5         d) 7.81 x 10-5

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A buffer contains acetic acid and sodium acetate. What happe…

A buffer contains acetic acid and sodium acetate. What happens when a small amount of HCl is added?A. The acetate ion reacts with H⁺.B. The acetic acid reacts with H⁺.C. The pH increases dramatically.D. The buffer is destroyed immediately.

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8. Which one of the following pairs of acids and conjugate b…

8. Which one of the following pairs of acids and conjugate bases is incorrectly labeled and                   incorrectly matched.                        ACID                                 CONJUGATE BASE                 a)       HF                                                            F-                b)      HClO                                                        ClO-                c)      H2O                                                           OH-                d)      NH4+                                                         NH2-                e)      H3O+                                                         H2O

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DO NOT CLICK PAST THIS QUESTION UNTIL AFTER YOU HAVE TAKEN Y…

DO NOT CLICK PAST THIS QUESTION UNTIL AFTER YOU HAVE TAKEN YOUR EXAM. Remember to return to Canvas after you’ve completed your assessment to submit this quiz and end proctoring session.For any technical assistance, please contact Honorlock support thru the livechat at the bottom right of this page or by calling (855) 828-4004. If a white board is permitted on your exam, please show it blank to the screen. Please navigate to Examplify at this time.  Your exam password is: ___________________________

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Which factor does NOT affect equilibrium position?A. Tempera…

Which factor does NOT affect equilibrium position?A. Temperature B. Pressure C. Catalyst D. Concentration

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If a reaction quotient Q>K, the reaction:A. Proceeds forward…

If a reaction quotient Q>K, the reaction:A. Proceeds forward B. Proceeds backward C. Is at equilibrium D. Stops

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A nurse has begun having nightmares, irritability, and emoti…

A nurse has begun having nightmares, irritability, and emotional distress after caring for multiple trauma patients over several months. Which intervention would be most appropriate?

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