C chegg Study I Guided so x C chemistry q Che X Chapter 12 P M Mathway I Math pr
ID: 1059449 • Letter: C
Question
C chegg Study I Guided so x C chemistry q Che X Chapter 12 P M Mathway I Math prob x 3. 9.3 16.66 p I Previous Answers Chem6 14, E.044 Calculate H and [OH J on each solution at 25°C. Identify each solution as neutral, acidic, or basic (a) pH 0.34 (c) pH 10.51 (b) pH 3.73 0.00017 M 2.2 OH OH OH 4.8e-15 5.3e-11 acidic acidic acidic basic basic basic neutral neutral neutral (d) poH 14.31 (e) pOH 9.57 (f) poH 1.13 OH OH OH acidic acidic acidic O basic basic basic neutral neutral neutral 6.66/16.66 por Chem6 14, E.052 Calculate the concentration of an aqueous HNO3 solution that has pH 5.80 a O Ask me anything My Notes Ask Your Teacher My Notes Ask Your Teacher 3:13 AM d) /23/2016 19Explanation / Answer
PH and POHcan be negative or higher than 14
you can do the same thing , just as you did before
PH + POH = 14
PH = 14 - 14.31 = -0.31 , PH value below 7 is always acidic
-0.31 = -log10[H+]
[H+] = 2.0147 M
[OH-] = 10-14.31 = 4.9*10-15 M
POH=9.57
[OH-] = 10-9.57 = 2.70*10-10 M
PH = 14 - 9.57 = 4.43 , acidic
[H+] = 10-4.43 = 3.71535*10-5M
POH = 1.13
[OH-] = 10-1.13 = 0.07413 M
PH = 14 - 1.13 = 12.87 If PH> 7 , then it is basic
[H+] = 10-12.87= 1.3489*10-13M
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