Find the activity(not the activity coefficient) of the (C3H7)4N+ (tetrapropylammonium) ion in a solution containing 0.005 M (C3H7)4N+Br- plus 0.005 M (CH3)4N+Cl-.
Activity coefficients :
Ionic strength .001 .005 .01 .05 0.1
(C3H7)4N+ : .966 .931 .912 .85 .82
CH3)4N+: .964 .928 .902 .82 .775
The ionic strength is equal to 1/2 the summation of the <multiple> (concentration of the species multiplied by its charge squared)
Ex: Ionic strength of .02 KBr
= 1/2 ([K](1^2)+[Br](1^2))
The question here is, how do i figure out the concentration of the tetrapropylammonium ion for the concentration in the equation, and how do i figure out the activity coefficient? The ionic strength will be affected by mixing it in a different solution, and also, the solution has another ion with a different activity coefficient.© BrainMass Inc. brainmass.com October 24, 2018, 6:17 pm ad1c9bdddf
This solution provides a very detailed explanation for understanding this analytical chemistry problem and addresses how to find both the concentration and activity coefficient. In order to view this solution, a Word document needs to be opened.
Arranging metal activity series based on reations
1. Four metals are tested: A,B,C,D. If A is more active than C and C is more active than B, is it necessary to test A and B? Explain your answer.
2. You observe that when copper is added to a solution containing gold ions, the copper dissolves and the gold precipitates. Similarly, almost all other metals will displace gold from solutions of good salts.
a) Do these observations mean that the gold ion is a good oxidizing agent or a poor oxidizing agent? Explain
b) Expensive electronic equipment use gold-coated parts. Explain why this is based on chemical behavior.View Full Posting Details