Asked by Maria

you made up a standard solution of calcium sulfate (CaSO4). the temperature is 25C. you then add 5.00*10^-3 odium sulfate (Na2SO4). Calculate the concentrations of calcium and sulfate after equilibrium is reached? The pKs of CaSO4 is 4.58.

Answers

Answered by DrBob222
CaSO4 ==> Ca^+2 SO4^-2
Ksp = (Ca^+2)(SO4^-2) = 4.58E?? (you had better look up the Ksp because 4.58 can't possibly be correct.)
You then add 5.00*10^-3 </b>WHAT</b> of Na2SO4.
Take care of the errors in this and I'll get back to it.
Answered by mig
the pKs is correct. If you 10 to the negative power of pKs you get the Ks. I'm having a problem witht this problem as well. Any help? And yes, you add 5*10^-3 of Na2SO4.
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