Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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If the unknown consisted of Co+2, Fe+2, Sr+2, and Ni+2, which cation would completely complex with EDTA first, second, then third during the complexometric determination of magnesium.
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- Write the Equilibrium Expression for the Reaction of the Formation of the Complex IonFe(H2O)63+(aq) + SCN1-(aq) → [Fe(H2O)5NCS]2+(aq) + H2O(l)arrow_forwardPlease don't provide handwritten solution ....arrow_forwardThe equilibrium constant for the following reaction is 1.0 x 1023. Cr+ (aq) + H₂EDTA² (aq) CrEDTA (aq) + 2H+ (aq) O₂C-CH₂ CH, CO, O₂C-CH₂ CH, C, EDTA- N-CH₂-CH₂-N) Ethylenediaminetetraacetate EDTA is used as a complexing agent in chemical analysis. Solutions of EDTA, usually containing the disodium salt Na₂H₂ EDTA, are used to treat heavy metal poisoning. Calculate [Cr] at equilibrium in a solution originally 0.0050 M in Cr³+ and 0.040 M in H₂EDTA and buffered at pH 6.00. Assume that H₂ EDTA form dominates at this pH. = [Cr³+) | Marrow_forward
- Which of the following will increase the solubility of calcium silicate, CaSiO3? a) The additions of calcium chloride, CaCl b) The addition of oxygen gas c) The formation of ferricyanide, [Fe(CN)6]3- d) The formation of [Ca(EDTA)]2-arrow_forwardTaking the activity coefficient effect into consideration, please calculate the concentration of Fe in a solution that is saturated with Fe4[Fe(CN)6]3 (Iron(III) ferrocyanide). The overall ionic strength of the solution is 0.001 M. Notes: Kap of [Fea[Fe(CN)6]3] = 3.3×1041. At 0.001 M, the gFe3+ and g[Fe(CN)6] are 0.738 and 0.570, respectively. Format BIU ... Ea h Add a File Record Audio Record Video ofarrow_forwardThe citrate ion is a tridentate ligand that forms a strong complex with ferric ion: Fe^3+ + 2Cit^3- <=> Fe(Cit)2^3- A metal ion buffer solution was prepared by adding 2.5g of Na3Cit.2H2O (MW = 294.1) and 1 g of Fe(NO3)3.9H2O (MW=404.01) to a 500ml volumetric flask. The flask was filled to the mark and mixed throughly after the reagents dissolved. The pFe = 18.56, Calculate Kf.arrow_forward
- What effect would it have on calculated value of Ksp if insufficient time was allowed for the Ca(IO3)2 solution to reach equilibrium?arrow_forwardThe formation constant for [Cu(CN)2]- is 1.0 x 1016, what is the value of the dissociation constant for this complex? Your answer should have 2 sig figs.arrow_forwardThe formation constant for Ni(en)32+ is 4.0 x 1017, what is the value of the dissociation constant for this complex?arrow_forward
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