Asked by Sam
A weak acid (HA) is found to ionize 16.2%
when mixed at a concentration of 0.21 mol/L.
What is the value of Ka for this acid?
when mixed at a concentration of 0.21 mol/L.
What is the value of Ka for this acid?
Answers
Answered by
DrBob222
...............HA ==> H^+ + A^-
initial.......0.21....0.....0
change........-x......x......x
equil...0.21-0.034....0.034..0.034
Where does the 0.034 come from? That's 0.21 x 0.162 = 0.034
Substitute in Ka expression and solve for Ka.
initial.......0.21....0.....0
change........-x......x......x
equil...0.21-0.034....0.034..0.034
Where does the 0.034 come from? That's 0.21 x 0.162 = 0.034
Substitute in Ka expression and solve for Ka.
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