< Question 1 of 15 > EDTA is a hexaprotic system with the pK, values: pKu1 = 0.00, PK 2 = 1.50, PK 3 = 2.00,...
EDTA is a hexaprotic system with the pK, values: pKai = 0.00, pKq2 = 1.50, pK a3 = 2.00, pK a4 = 2.69, pK a5 = 6.13, and pK a6 = 10.37. COOC–CH, HỌC–COO :N-CH2-CH2-N: 00c—CH HC-000 EDTA4- (or Y4-) The distribution of the various protonated forms of EDTA will therefore vary with pH. For equilibrium calculations involving metal complexes with EDTA, it is convenient to calculate the fraction of EDTA that is in the completely unprotonated form, Yº-. This...
EDTA is a hexaprotic system with the pK, values: pKal = 0.00, pKa2 = 1.50, pKa3 = 2.00, pK24 = 2.69, pKa5 = 6.13, and pKa6 = 10.37. The distribution of the various protonated forms of EDTA will therefore vary with pH. For equilibrium calculations involving metal complexes with EDTA, it is convenient to calculate the fraction of EDTA that is in the completely unprotonated form, Y4-. This fraction is designated Aye-. TOOC—CH2 H C—Coo :N-CH2-CH2-N: -ooc-CH2 H₂c_coo EDTA4- (or...
EDTA is a hexaprotic system with the pKa values: pKa1=0.00, pKa2=1.50, pKa3=2.00, pKa4=2.69, pKa5=6.13, and pKa6=10.37. The distribution of the various protonated forms of EDTA will therefore vary with pH. For equilibrium calculations involving metal complexes with EDTA, it is convenient to calculate the fraction of EDTA that is in the completely unprotonated form, Y4−. This fraction is designated αY4−. Calculate αY4− at two pH values; ph=3.20 and ph=10.20
-000-CH2 H2C-coo N-CH2-CH2-N: TOOC—CH2 H2C-coo EDTA+ (or Y4-) EDTA is a hexaprotic system with the pKvalues: pKai = 0.00, PK 2 = 1.50, pK23 = 2.00, pK 24 = 2.69, pKa5 = 6.13, and PKa6 = 10.37. The distribution of the various protonated forms of EDTA will therefore vary with pH. For equilibrium calculations involving metal complexes with EDTA, it is convenient to calculate the fraction of EDTA that is in the completely unprotonated form, Y4-. This fraction is designated...
EDTAEDTA is a hexaprotic system with the p?apKa values: p?a1=0.00pKa1=0.00, p?a2=1.50pKa2=1.50, p?a3=2.00pKa3=2.00, p?a4=2.69pKa4=2.69, p?a5=6.13pKa5=6.13, and p?a6=10.37pKa6=10.37. The distribution of the various protonated forms of EDTA will therefore vary with pH. For equilibrium calculations involving metal complexes with EDTAEDTA, it is convenient to calculate the fraction of EDTAEDTA that is in the completely unprotonated form, Y4−Y4−. This fraction is designated ?Y4−αY4−. Calculate ?Y4−αY4− at two pH values pH=3.15 ?Y4−= pH=10.30 ?Y4−=
Ethylenediaminetetraacetic acid (EDTA) is a hexaprotic acid with the following structure and pK values. HOOC- COOH - NHA THN PK 0.000 PK 1.500 PK 1.991 PK, 2.669 PK 6.160 PK, 10.259 HOOC COOH For simplicity, the fully protonated form of the acid is commonly represented as HY”. The fully deprotonated form of EDTA (Y") reacts with a variety of metal cations to produce complex ions, M" (aq) +Y+ (aq) MY(aq) K= aK where K is the formation constant for the...