AlgebraLAB    
About Us Activities Career Profiles Connections Site Directions Glossary
Lessons Reading Comprehension Passages Practice Exercises Search AlgebraLAB StudyAids: Recipes Word Problems
   
   
Chemistry: pH - A Logarithm Application #1


Question Group #1
Directions and/or Common Information: 
pH = -log [H3O+]
The pH level of a substance is equal to the negative log of the concentration of the hydronium ion, [H3O+].
[H3O+] × [OH-]= 1.0 × 10-14
In any substance, the product of the concentration of the hydronium ion, [H3O+], and the concentration of the hydroxide ion, [OH-], is always equal to 1.0 × 10-14


Given a substance with a hydronium ion concentration of 2.5 x 10-5 (moles/L)
  1. Find the pH of the substance.
  2. Find the concentration (in moles/L) of the hydroxide ion. [OH-]
 
1. 





Given a substance with a hydronium ion concentration, [H3O+], of 1.2 x 10-12 (moles/L)
  1. Find the pH of the substance.
  2. Find the concentration (in moles/L) of the hydroxide ion. [OH-]
2. 





Given a substance with a hydronium ion concentration, [H3O+], of 1.0 x 10-7 (moles/L)
  1. Find the pH of the substance.
  2. Find the concentration ( in  moles/L) of the hydroxide ion, [OH-].
3. 





Given a substance with [H3O+] = 5.0 x 10-3 (moles/L)
  1. Find the pH of the substance.
  2. Find the concentration (in moles/L) of the hydroxide ion, [OH-]
4. 





Given a substance with a pH value of 8.80
  1. Find [H3O+]
  2. Find [OH-]
5. 





Given a substance with a pH value of 6.13
  1. Find [H3O+]
  2. Find [OH-]
6. 





Given a substance with a pH value of 1.23
  1. Find [H3O+]
  2. Find [OH-]
7. 





Given a substance with a hydroxide ion concentration, [OH-], of 5.6 x 10-4 (moles/L)
  1. Find [H3O+]
  2. Find the pH-]
8. 





Given a substance with a hydroxide ion concentration, [OH-], of 1.7 x 10-10 (moles/L)
  1. Find [H3O+]
  2. Find the pH.
9. 





Given a substance with a hydroxide ion concentration, [OH-], of 5.0 x 10-5 (moles/L)
  1. Find [H3O+].
  2. Find the pH.
 
10. 








K Dodd

Show Related AlgebraLab Documents



AlgebraLAB
Project Manager
Copyright © 2003-2014
Mainland High School
All rights reserved.