Asked by Clarissa
What is the pH of a solution if two aspirin each containing 500mg of acetylsalicyclic acid were dissolved in 325 ml of water?
Answers
Answered by
DrBob222
If we call aspirin, HA, then the acid dissociates in water as
HA ==> H^+ + A^-
Ka = (H^+)(A^-)/(HA)
(H^+) = x
(A^-) = x
(HA) = moles aspirin/L soln.
moles aspirin = 2*500/molar mass aspirin.
L soln = 0.325 L
Solve for x and convert to pH.
Post your work if you get stuck.
HA ==> H^+ + A^-
Ka = (H^+)(A^-)/(HA)
(H^+) = x
(A^-) = x
(HA) = moles aspirin/L soln.
moles aspirin = 2*500/molar mass aspirin.
L soln = 0.325 L
Solve for x and convert to pH.
Post your work if you get stuck.
Answered by
Anonymous
uyguih
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