Question

Which of the following statements is NOT TRUE for conditional formation constants? A. Conditional formation constants allow the view of uncomplexed EDTA as being in only one form, Y4-, in equilibrium calculations. B. As pH drops the value of a conditional formation constant increases. C. The value of a conditional formation constant must be very large to guarantee sharp end points during titrations. D. Conditional formation constants are pH depedent.

Answer #1

A. Conditional formation constants allow the view of uncomplexed EDTA as being in only one form, Y4-, in equilibrium calculations.

TRUE, we can calcualte DTA from Y4- concentrations

B. As pH drops the value of a conditional formation constant increases.

False, these are kept constant

C. The value of a conditional formation constant must be very large to guarantee sharp end points during titrations.

TRUE, the larger the vlaue, the easier it will get to the difference in the endpoint

D. Conditional formation constants are pH depedent.

FALSE, they are not dependant, that's the point of the constant!

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