Asked by nishac | 30th Jun, 2009, 03:14: PM
In earlier syllabus the numericals on pH were in the course.
(a) pH = - log [H+]
Where [H+] is the concentration of hydrogen ions in the solution.
pH = - log (1 x 10 -7)
pH = - log (10 -7)
pH = - (-7) log 10
pH = 7 Since log 10 = 1
(b) Since the pH = 7 the solution is neutral.
If the pH value of a solution is <7, it is acidic
If the pH value of = 7, the solution is neutral
If the pH value > 7 the solution is basic.
Answered by | 30th Jun, 2009, 04:31: PM
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