Worksheet: pH Calculations Name
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The letters "pH" represent the French words "pouvoir hydrogene" which means
"hydrogen power".
•definition of pH is pH is equa/ to the negative log {logarithm) of the
-'+--"-'---"-'---"-'---"-'-- ion concentration of a solution.
•The logarithm of a number is the power to which 10 must be raised to
equal that number. /��1,,,'.
A pH ':alue of less than 7 indicates a(n) _______ solution. A pH value
of .,,...... ____ indicates a neutra! solution. A pH value of more than 7 indicates a(n)
lYl> I { soluti on.
PROBLEMS: Show all work and circle the final answer.
1. Determine the pH of a 0.010 M HNO3 solution.
2. What is the pH of a 2.5 x 10-6 M solution of HCI?
',
4. Calculat'èthepH of a 0.0010 M NaOH solution.
of a 0.020M Sr(OH)2 solution?
