Question

M. 7. What is true about the pH of a solution with a hydrogen ion concentration of 7.3 x 10 The pH is 3.7 and is acidic. The pH is 8.1 and has excess H in solution. 73000 Bongo C. The pH is 8.1 and has excess OH' in solution. d. The pH is 9.0 and it is basic. e. None of the above answers are correct. A water solution that accumulates CO2 gas will have a tendency to a. Decrease in pH and increase in OH. b. Increase in pH and decrease in H. c. Decrease in pH and increase in H" d. Increase in pH and increase in H. Decrease in pH and decrease in H. Which of the following is a buffer? a. HCI & CH H3PO. &C H2CO, & HCO3 Na & C d. e. H2SO4 & HSO4 10. How would you describe the ionization of HCI? a. HCl would ionize about 1%. b. HCI would ionize 100%. A water solution of HCl would be completely in (H ) and (CI) dissociated form. d. HCl is a strong electrolyte. e. All of the above are correct. ab. B, C, & D are correct. hat your time on this assignment is well spent. Being a Lucky Bonus #11. Using the correct name for HCO3', describe the lon's acid or base property. our answer on the back of the scantron form. Know that your time on this assignment is well wise consumer and most careers require a fundamental understanding of acid/base chemise

Answer 1

(7) (H+] = 7.3 X 109M pH = -log [A] - - log (7.3 x 10 9 = -log 7.3 + (- log 109) pH = -0.863 + 9 = 8.1 ₂. e. solution is basic and having more ions. OH Ans: (c) (8) A water solution that will have tendency to concentration. accumulate Co gas increase Hiion - with mone Ht ion solution will become acidic & pH will decrease Ans: (c) decrease in pH & increase in at (9 Ans: (2) H₂CO₃ & HCOą HCO₂ is a weak acid & it's conjugate base is HCO3. * A butter solution is an aqueous solution consisting of a mixture of weak auid & it's conjugate base.

(10) He is a strong acid which r'onize completely in water Hel (aq) H+ + che (aq cao) so, we can say - He would ronize 100%. → A water solution of Hell would be completely in (Hry & clion dissociate form. - Hal is a strong electrolyte. Ans: ab. B.C&D and correct.