Please see screenshot for question 13. Calculate the PH of a 0.1M HA solution. Ką for HA is 7.2 x 10-5B4.0|2.12.3ONone of the others2614. Give the positive root for the following quadratic formula:x2 + 5.5 x 10-11 . x – 5.5 x 10-12 = 0O4.6]None of the others B5.6]4.1|5.115. The PH of a 0.1M HF/0.1NaF (Ką for HF is 7.2 x 10-5) buffer solution is:]None of the others5.13.106.1|4.116. The expression of Ksp for Ni(OH)2 is:A N²*] · [OH¯]² DN?+]? . [OH-]²|[Ni*]° • [OH¯]D Ni*] · [OH¯]|None of the others17. The solubility equilibrium for Mn(IO3)2 is:]None of the others]Mn(IO3)2(s) = Mng)]Mn(IO3)2(s) Mnag) +!|Mn(IO3)2(s) 2 Mn²aq) + IO32- (aq)]Mn(IO3)2(6) = 2Mnag) + 2 IO3 (aq)+2103¯ (aq)- I03¯ (aq)

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13. Calculate the PH of a 0.1M HA solution. Ka for HA is 7.2 x 10-5 |4.0 ONone of the others 2.1 ]2.3 26

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter16: Reactions Between Acids And Bases

Section: Chapter Questions

Problem 16.80QE: Calculate the pH of each of the following solutions. (a) 10.0 mL of 0.300 M hydrofluoric acid plus...

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13. Calculate the PH of a 0.1M HA solution. Ką for HA is 7.2 x 10-5
B4.0
|2.1
2.3
ONone of the others
26
14. Give the positive root for the following quadratic formula:
x2 + 5.5 x 10-11 . x – 5.5 x 10-12 = 0
O4.6
]None of the others B5.6
]4.1
|5.1
15. The PH of a 0.1M HF/0.1NaF (Ką for HF is 7.2 x 10-5) buffer solution is:
]None of the others
5.1
3.1
06.1
|4.1
16. The expression of Ksp for Ni(OH)2 is:
A N²*] · [OH¯]² DN?+]? . [OH-]²
|[Ni*]° • [OH¯]
D Ni*] · [OH¯]
|None of the others
17. The solubility equilibrium for Mn(IO3)2 is:
]None of the others
]Mn(IO3)2(s) = Mng)
]Mn(IO3)2(s) Mnag) +!
|Mn(IO3)2(s) 2 Mn²aq) + IO32- (aq)
]Mn(IO3)2(6) = 2Mnag) + 2 IO3 (aq)
+2103¯ (aq)
- I03¯ (aq)

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