Calculating The pH and pOH of Strong Acid and Base

There are several ways to define acids and bases, but pH and pOH only refers to hydrogen ion concentration and hydroxide ion concentration, respectively.

 

 

 

 

 

 

 

pH - is used to indicate whether a substance is acidic or alkaline. The formula for calculating the pH of an aqueous solution is defined by UC Davis as "the negative of the logarithm of the concentration of hydrogen ions." This can be expressed as: 

 

ACIDIC - pH of 7

NEUTRAL - pH of less than 7 (pH < 7)

BASIC - pH of greater than 7 (pH > 7)

 

Calculating pH and pOH Cycle

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

pH and H+ Calculations

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

pOH and OH- Calculations

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Calculating of pH of Strong Acid and Strong Base

-strong acid- the [H+] is completely dissociates in aqueous solution (H2O) and also in the strong base but the [OH-] is completely dissociates instead.

 

Strong acid calculations:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Strong Base Calculations:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reference:

http://bowvalleycollege.ca/Documents/Learning%20Resource%20Services/Library%20Learning%20Commons/E-Resources/Study%20guides/chemistry20ph_calc.pdf

http://chemistry.about.com/od/workedchemistryproblems/a/phstrongacid.htm

http://www.chemteam.info/AcidBase/pH-Strong-Acid-Base.html

 

 

Written by: Terry Maine Dela Pieza