Which is the value of the conditional constants, Ki of the Cd^2+.EDTA complex at

Question

Which is the value of the conditional constants, Ki of the Cd^2+.EDTA complex at pH = 9. The Cd^+2 .EDTA complex has a formation constant 0.985 0.041 0.676 16.5 0.028 Find the pH of a solution prepared by dissolving 1.00 of potassium hydrogen phthate and 1.50 g of disodium phthate in 50.0 ml, of water. Calculate the pH when 50.00 mL of 0.100 M HNO^3 is mixed with 40.00 mL of 0.0750 M NaOH. Calculate the pH during the titration of 50.00 mL of a 0.1500 M methylamine with 0.1000 M HCL.K_b = 4.42 times 10^-4. When the volume added is a) V = 0 mL, b) V = 50 mL, c) V = 75 mL, d) V = 80 mL. Calculate [Mn^2+] when 50.00 mL of 0.1000 M Mn^2+ is titrated with 17.00 mL of 0.2000 M EDTA. The titration is bufferd to pH 11 for which

Explanation / Answer

2. pH= PKa+log(n1/n2)

n1=HNO3= 500* (0.100M of HNO3)/1000 of HNO3= 0.05

n2= NaOH= 400* (0.0750M of NaOH)/1000 of NaOH= 0.03

PH= 3.35+ log(0.05/0.03)= 0.743

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