2. With respect to solubility equilibria (Ksp), what are the key differences in Pb2+ solubility with and without phosphate added? How would the concentration of free Pb2+ be expected to change upon addition of a phosphate (hint: think of Le Chatelier’s principle)? 3. In order to keep the Pb3(PO4)2(s) scaling from redissolving, what [PO4 3-] is needed to keep the water-saturated (solve for phosphate similar to 1c)? What happens if [PO43-] is below that value?

Q: The fictitious complex M(SCN)2 can be produced from an aqueous equilibrium in which the M2+ ion is…

A:

Q: e aqueous s [Ni(CN)4] complex K, = 2.00 × 10³¹ at 25 °C. se equal volumes of 0.0096 MNi (NO3),…

A:

Q: 2. What is the solubility of lead (in pM) for solid Pb(OH)2 in a sample of water containing 2.4 x…

A:

Q: Give the expression for the solubility product constant for PbCl2. [Pb²+][Cl]² [PbCl₂] [PbC1₂]…

A: Since, We know that, Concentration of solid does not change with time. So, concentration of solid is…

Q: Consider the insoluble compound nickel(II) carbonate , NiCO3 . The nickel ion also forms a complex…

A: answer of the question is given below

Q: A solution may contain Ag+, Pb2+, and/or Hg22+. A white precipitate forms on addition of 6 M HCI.…

A: 1.  Formation of a white precipitate upon addition of 6 M HCl Adding 6 M HCl to a solution…

Q: What colour would be observed when iron(1I1) chloride is added to the following equilibrium…

A:

Q: Consider the insoluble compound nickel(II) carbonate, NICO3. The nickel ion also forms a complex…

A: The equation for the dissociation of NiCO3(s) is:NiCO3(s)   Ni2+(aq) + CO32-(aq) ; Ksp = 1.42 ×10-7…

Q: set up end up with an equilibrium concentration of [Fe(SCN)]2+ of 8.3x10-5 M. Based on these…

A:

Q: 4. Which cation or cations may be present in a pale blue solution that turns deep blue and forms a…

A: Cu2+ ions solution has pale blue color solution. The reaction between Cu2+ ions and Ammonia forms a…

Q: For the aqueOuS [Ni(NH3)6] 2+ complex Kf= 5.50 x 10^8 at 25 °C. Suppose equal volumes of 0.0016 M…

A:

Q: The Ksp value for Cu(OH)2 is 1.6x10‑19 at 25oC, what will the equilibrium concentration of [Cu2+] in…

A:

Q: Zn and Sn ions coprecipitate when they exist in solution to form mixed oxides. Suggest a…

A: a. Given that, Zn and Sn ions coprecipitate when they exist in a solution to form mixed oxide. We…

Q: What would happen to CaBr2 + Ni(NO3)3 --> NiBr3 + Ca(NO3)2 , if another CaBr2 was added?

A: According to Le-Chateliers principle, if reactant added in the reaction mixture then the reaction…

Q: what Is the ZnBrat Na,s→ precipitate fo

A: In chemical reactions, Solid product form in the reaction is known as precipitate.

Q: + For the aqueous Ni [Ni(NH3)6] complex K₁ = 5.50 × 108 at 25 °C. Suppose equal volumes of 0.0062M…

A: Step 1: forward reaction Ni2+ + 6NH3 =[ Ni(NH3)6]^2+0.         1-0.6=0.4.   0.1            k1=…

Q: In an aqueous chloride solution cobalt(II) exists in equilibrium with the complex ion CoCL42. Co²+…

A: The observation at low and high temperatures would be used .

Q: Write a balanced net ionic equation to show why the solubility of Zn3(PO4)2 (s) increases in the…

A:

Q: Calculate the solubility of the slightly soluble salts of Cr(OH)2 and Cr(OH)3. What would you…

A: The question is based on the concept of solubility product Principle.   it states that a weak…

Q: What must be the concentration of F− to just start precipitation of LaF3 from a solution which is…

A:

Q: Write the cell notation of the potentiometric set-up with SCE as the reference electrode.   b)…

A: a) Anode II Cathode AgIAg+ IIHg2 cl2 IHg. cl-Anode 2Ag→2Ag+ +2e-CathodeHg2 cl2 +2e- →Hg+2cl- Solving…

Q: Look at the cobalt equilibrium and decide which is pink (I or II) and which is blue? Co(H2O)62+ +…

A: The question is based on the concept of Le-chatlier principle.It States that when a system at…

Q: The overall formation constant for Fe(CN)6³ is 1.0x1042. K₁= [Fe(CN)6³-] [Fe³+][CN16 =1.0x104² 3-…

A: Given :  Kf = 1.0 x 1042  [Fe+2] = 0.15 M  [CN-] = 1.20 M

Q: AgBr ha s a very low soluability in water. Silver ions from a complex ion with thiosulfate…

A: Concentration of species increases or decreases is decided by the species present in equilibrium.

Q: A solution is prepared such that the initial concentration of A2+ is 1.50×10-3 M and the initial…

A:

Q: What is the approximate concentration of free Aut ion at equilibrium when 1.86x10-2 mol gold(1)…

A: The question is based on the concept of chemical equilibrium.We need to calculate equilibrium…

Q: A 2.00 mL solution of 0.00800 M Fe(NO3)3 is mixed with 3.00 mL of 0.00300 M NaSCN to form the blood…

A: Any solution’s concentration provides the knowledge about relative quantity of solute available into…

Q: Ksp

A:

Q: How do you figure out the function of complexed and uncomplexed Fe3+as a function of log(SCN-) in…

A: Since, equilibrium constant (Keq) can be written as- [FeSCN2+]: Concentration of Fe complexed.…

Q: Consider the insoluble compound nickel(II) carbonate, NiCO3. The nickel ion also forms a complex…

A: The equation for the dissociation of NiCO3(s) is: NiCO3(s)  ⇌ Ni2+(aq) + CO32-(aq) ; Ksp = 1.42…

Q: Solid KSCN was added to a(2.20x10^0) M Co2+ solution so that it was also initially (2.20x10^0) M…

A:

Q: What is the approximate concentration of free Cu+ ion at equilibrium when 1.91x10-2 mol copper(I)…

A: Answer:- This question is answered by using the simple concept of calculation of equilibrium…

Q: For the aqueous [Ni(NH₂)]²* complex K₁ = 5.50 × 108 at 25 °C. Suppose equal volumes of 0.0078M…

A: We need to calculate concentration of Ni2+ at equilibrium

Q: 1. It is possible to dissolve significant amounts of Mg(OH)2 in solutions in which the concentration…

A: The equilibrium of a solid in a saturated solution with its equivalent ions in a solution is…

Q: Consider the insoluble compound nickel(II) carbonate, NICO3. The nickel ion also forms a complex…

A: The equation for the dissociation of NiCO3(s) is: NiCO3(s)  ⇌ Ni2+(aq) + CO32-(aq) ; Ksp = 1.42*10-7…

Q: Calculate the Ksp for the slightly soluble salt Ce(IO3)4, if at equlibrium, the salt has measured…

A: The solubility equilibrium for the slightly soluble salt Ce(IO3)4:Now,

Q: 2. For each of the following pairs, identify a reagent that will dissolve one substance but not the…

A: I) HgS does not dissolve in (NH4)2S, hence produces a black ppt of HgS. However As2S3 dissolves in…

Q: Which of the following compounds precipitates from a solution that has the concentrations indicated?…

A: a) Given: [Ca2+ ] = 0.003 M & [CO32- ] = 0.003 M

Q: The formation constant of a complex ion [M(NH3)4]2+(aq) is 8.8E8. If a solution is prepared by…

A: Answer:- Firstly a balanced equilibrium equation is written then using the expression of equilibrium…

Q: A 1.000-g sample containing  bromide was dissolved in sufficient water to give 100.0 mL.  A 50.00 mL…

A: The answer is attached below-:

Q: For the aqueous [HgI4] complex K₁=6.76 × 10²⁹ at 25 °C. Suppose equal volumes of 0.0066M Hg(NO3),…

A:

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.