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daewoo
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Homework Statement
A 10.02 mL solution of chemical A4+ is determined by precipitation titration with 40.07 mL of 0.03015 M titrant B3-. The reaction stoichiometry is given by
3A4+ + 4B3- => A3B4 (s)
For a log Ksp of -36.6, what is pB3- at the equivalence point?
You must express your answer to two decimal places only in order to get the program to grade it properly!(Caution: Note the difference between Log X and pX, in terms of sign)
Homework Equations
-log[concentation]
The Attempt at a Solution
since its at equivalence point the concentration of [b3]and [a] would be the same.
since ksp=[a]=-36.6
In terms of x, wouldn't it be (3x^3)(4x^4) = -36.6? (6912x^7)=-36.6 = -1.1726 but then i can't take a -log of a negative number?
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