At higher pH values, the fraction of species for EDTA 4- increases because more
ID: 873067 • Letter: A
Question
At higher pH values, the fraction of species for EDTA4- increases because more H+ are available, which helps EDTA act as a stronger acid. T F
The concentration of EDTA4- in the solution is related to all the forms of EDTA in the solution via the following equation: ?[EDTA4-] = CEDTA T F
H2EDTA2+ is only present in a solution of EDTA if the pH is very low. T F
At the equivalence point in an EDTA - metal ion titration, the concentration of the metal ion is zero. T F
If the ?EDTA4- is small, the K'f may also become too small for a successful titration. T F
Explanation / Answer
The 2nd and 4th statements are TRUE
The 1st and 3rd statements are FALSE
The reason for being at higher pH value, the edta didn't tend to loose H+ easily which will make the conc of H+ less in acidic medium hence first statement is false
The third statement is false since the conc will be in equilibrium value and not at zero