calculate the concentration of hydronium in the following solution at 25 degrees
ID: 504863 • Letter: C
Question
calculate the concentration of hydronium in the following solution at 25 degrees Celsius: concentration of hydroxide is 1.9x10^-9M Exercise 17.50 with feedback You may want to reference section 17.6 while completing this problem. Part A Calculate H,0 lin the following aqueous solution at 25 oc oH l 1.9x10 s M Express your answer using two significant figures. H30 M Submit My Answers Give Up Part B calculate Hao lin the following aqueous solution at 25 C loH 30 10-2 M Express your answer using two significant figures. Submit My Answers Give Up Part C Calculate [H3O l in the following aqueous solution at 25 C IOH l 6 1.10-12 M Express your answer using two significant figures.Explanation / Answer
Part A :
Given [OH-] = 1.9x10^-9M
[H3O+]=?
pOH = -log[OH-]
= -log (1.9x10^-9)
= 8.72
pH = 14-pOH
= 5.28 = -log[H3O+]
therefore [H3O+] = 5.2 x 10^-6M
PartB:
Given [OH-] = 3.0x10^-2M
[H3O+]=?
pOH = -log[OH-]
= -log (3.0x10^-2)
= 1.52
pH = 14-pOH
= 12.48 = -log[H3O+]
therefore [H3O+] = 3.3x 10^-13M
Part C:
Given [OH-] = 6.1x10^-12M
[H3O+]=?
pOH = -log[OH-]
= -log (6.1x10^-12)
= 11.2
pH = 14-pOH
= 2.8 = -log[H3O+]
therefore [H3O+] = 1.6x10^-3M
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