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Chemistry
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18 Dec 2019

Calculate [H3O+] and [OH-] from pH or pOH

A) pOH = 3.4

B) pH = 5.7

C) pH = 12.4

D) pOH = 10.9

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31 Dec 2019
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Related questions

For each of the following strong base solutions, determine [OH−],[H3O+], pH, and pOH.

A. 8.69×10−3 M LiOH

1. [OH−],[H3O+]

2. pH,pOH

B. 1.12×10−2 M Ba(OH)2

1. [OH−],[H3O+]

2. pH,pOH

C. 2.1×10−4 M KOH

1. [OH−],[H3O+]

2. pH,pOH

D. 4.9×10−4 M Ca(OH)2

1. [OH−],[H3O+]

2. pH,pOH

Determine the pH of the following solutions at 25 C.

(a) [H3O+] = 6.39 x 10-10 M

pH= ?

(b) [H3O+] = 7.27 x 10-3 M

pH = ?

Calculate the pOH of the following solutions.

(a) [OH-] = 5.26 x 10-11

pOH= ?

(b) [OH-] = 9.56 x 10-3

pOH =?

Use pH, pOH, [H3O+], and [OH–] relationships. (a) The hydroxide ion concentration in an aqueous solution of HCl is 3.4×10-13 M. Calculate [H3O+], pH, and pOH for this solution.

[H3O+] = 2.9x10^-4 M pH = 1.54 pOH = 12.46

(b) The pOH of an aqueous solution of HNO3 is 9.30. Calculate [H3O+], [OH-], and pH for this solution. [H3O+] = 2x10^-5 M [OH-] = 5x10^-10 M pH = 4.70

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