Determine [OH? ] in each base solution. If the acid is

Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo Tro

Problem 59P Chapter 14

Introductory Chemistry | 5th Edition

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Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo Tro

Introductory Chemistry | 5th Edition

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Problem 59P

Determine [OH− ] in each base solution. If the acid is weak, indicate the value that [OH−] is less than.

(a) 0.25 M NaOH

(b) 0.25 M NH3

(c) 0.25 M Sr(OH)2

(d) 1.25 M KOH

Step-by-Step Solution:
Step 1 of 3

 Here, we have to calculate the concentration of [OH-] ion from each solution.

Step-1

(a) 0.25 M NaOH

Here, NaOH is a very strong base. It undergoes complete dissociation.

NaOH(s)  Na+ (aq) + OH-(aq)

Thus, the concentration of the OH- ion is same as the concentration of base.

Therefore, the [Base] = [OH-] = 0.25 M

The concentration of hydroxide ion [OH-] in 0.25 M NaOH is  0.25 M

Step-2

(b) 0.25 M NH3

Here, NH3 is a very weak base. It does not undergo complete dissociation.

 NH3(aq) +H2O(l)  NH4+ (aq) + OH-(aq)

Therefore, the concentration...

Step 2 of 3

Chapter 14, Problem 59P is Solved
Step 3 of 3

Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo Tro
ISBN: 9780321910295

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