Q: 2. Aluminium sulphate (alum) is added to water with a pH of 7.2. Based on the reaction below,…
A: Formula:- PH=12 pKw - 12 pKb- 1210g C pKa of alum…
Q: For a Chromium-Nickel cell [Cr3+ + 3e- --> Cr (-0.73)] & [Ni2+ +2e- --> Ni (-0.23)] 1M for both…
A:
Q: P19B.4 The following data have been obtained for the adsorption of H, on the surface of 1.00 g of…
A:
Q: 5. 2.4425 grams of benzoic acid is dissolved in one liter of pure water at 25°C. When placed in a…
A: The explanation is given below-
Q: The E° cell 0.135 V for the reaction B1,(s) + 5Cr20,2(aq)+ 34H (aq) – 6103 (aq) + 10Cr+(aq) + 17H20…
A: 1st we balanced the equation to find out what number of electrons involved in this reaction. then we…
Q: Calculate the pH of the cathode compartment for the following reaction given Ecell 3.01 V when Cr*+…
A: Given The concentration of Cr3+ is 0.12 M. The concentration of Al3+ is 0.32 M. The concentration…
Q: What is the purpose of NaOH and 3% H2O2 in the separation of aluminum, iron (3+) and chromium ? Why…
A: Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: Explain electrochemical fundamentals, and describe the general working principles for designing…
A: Biosensors can be defined as analytical devices which include a combination of biological detecting…
Q: Why is MgCl2•6H2O added in a preparation of EDTA solution?
A: Standard Solution of ethylene diamine Tetra Acetate, EDTA is prepared by mixing the EDTA salt with…
Q: What is the time needed for a constant current of 0.100 A to deposit 0.500 g of Tl (I) [AW= 204.38…
A: Given: Mass of Tl to be formed = 0.500 g. Current passed = 0.100 A And the ion present in the…
Q: The electrochemistry of metal complexes reflects the underlying chemical cquilibria involved in…
A: Solubility product (Ksp) It is the equilibrium constant obtained as the product of dissolved ion…
Q: The following measurements were recorded for standard solutions of metal complexes with EDTA using a…
A:
Q: Calculate the potential of an alloy (Ni) electrode immersed in Ni(OH)2, pH = 9.00, Ksp = 6.5 ×…
A: In electrochemistry, electrode potential is the electromotive force of a galvanic cell built from a…
Q: If the unknown consisted of Co+2, Fe+2, Sr+2, and Ni+2, which cation would completely complex with…
A: HSAB principle (Hard and soft acids and bases) The principle is used to determine the stability of…
Q: Draw the structure of EDTA and write the reactions in the ionization steps.
A: This question have to subparts, in first part draw the structure of EDTA and in second part we write…
Q: Should EDTA solutions be stored and kept long in bottle containers? Why?
A: Solution is made up of two components: solute and solvent. Solute which is present in major amount…
Q: Pt| Fe"(a=2,00), Fe**(a=1.20) || I'(a=0.1)| L(s) | Pt (a) Calculate E298. Neglect ion pairs and…
A:
Q: Calculate the pH of the cathode compartment for the following reaction given Ecell = 3.01 V when…
A:
Q: What would be the equilibrium potential for the ion Ca2+ in a cell be if (Ca2+Jout=15 mM and…
A: The equilibrium potential of ion is given by Vion = RT/nF ln[ion]out/[ion]in here, Vion =…
Q: If 22.29 mL of 0.02901 M EDTA is required to tirate 100.0 mL of spring water, then calculate the…
A: Molarity - ratio of number of moles of solute to the volume of solution in litres. Formula is,…
Q: A copper storage tank containing dilute H2SO4 at pH = 3 is blanketed with hydrogen at 1 atm.…
A: Reduction potential for Cu = E0 = 0.337 V During contamination, Cu (s) ⇋ Cu2+ (aq) + 2e-…
Q: 6. Upon operation of the hollow cathode lamp at high current the intensity of the produced beam…
A: The operation of the hollow cathode lamp is in the following fashion: i) The positively charged…
Q: Why is commercially available EDTA in the form of disodium salt, Na2H2Y.2H2O? to decrease EDTA…
A: A question based on solutions that is to be accomplished.
Q: Calculate the overpotential needed to sustain a current density of 100 mA at a Pt/Fe/Fe²* electrode…
A:
Q: Calculate the pH of the cathode compartment for the following reaction given Ecell = 3.01 V when…
A: The given reaction is, Therefore, Calculate the value of Eocell (potential of the cell):
Q: If an unknown consisted of Co+2, Fe+2, Sr+2, or Ni+2, which cation would completely complex with…
A: Given cations: Co+2, Fe+2, Sr+2 and Ni+2.
Q: A 25.0 mL sample containing Fe3+ was treated with 10.00 mL of EDTA 0.0367 mol / L to complex all the…
A: The number of moles excess EDTA that react with Mg2+ ion is determined by equation (1).…
Q: A hard water sample was found to have an equivalent of 0.1598 g CaCO3 (mw =100g/mol). What volume of…
A: Ionization of CaCO3: CaCO3 ---------> Ca2+ + CO32- So, Number of moles of Ca2+ = number of…
Q: The following cell was employed for the determination of pCrO4: SCE // CrO4 2-(xM) / Ag2CrO4 (s) /…
A:
Q: Data has been collected to show that at a given wavelength in a 1.00 cm pathlength cell, Beer's Law…
A: By Beer lambert law A=€lC Where € is molar absorptivity l is length of cell
Q: 1. Calculate the potential of a silver electrode following the addition of 10 ml of 0.1 M of CaCl to…
A:
Q: A synchrotron is an extremely powerful source of X-rays. The X-rays also can be geerated by…
A: Synchroton is powerful Source for generating xray.Xray are produced by high energy electron.
Q: Aluminium sulphate (alum) is added to water with a pH of 7.2. Based on the reaction below,calculate…
A: The given reaction is the hydrolysis of the salt. The salt here is Al2 (SO4)3 which on hydrolysis…
Q: 9. What is the current that must be passed through solution AuCl3 for 200 second to precipitate 3g…
A:
Q: The Fe(3) in a 0.8202g sample was determined by coulometric reduction to fe(2) at the platinum…
A: The reaction is: Fe3++e-→Fe2+ It implies that: 96485 C is required to convert 1 mol of Fe3+ to Fe2+.…
Q: 2. Aluminium sulphate (alum) is added to water with a pH of 7.2. Based on the reaction below,…
A:
Q: Which of the following does NOT form a 1:1 ratio with an EDTA molecule? O Li O Mg O Bi O Al
A: To give the answer of the given question we have to analyse the metals given.
Q: 2. Aluminium sulphate (alum) is added to water with a pH of 7.2. Based on the reaction below,…
A: Dose of the alum = 30 mg/mL = 0.030 g/L The concentration of alum solution was prepared in Al+3…
Q: you are measuring manganese (Mn) absorption using AAS, which hollow cathode lamp would you select as…
A: Hollow Cathode lamps are ideal source of spectral lines that are used for testing in laboratories.…
Q: Give information about the structure of EDTA and the titrations with EDTA (indicators used,…
A: Titration is the slow addition of one solution of a known concentration to a known volume of another…
Q: 2. Aluminium sulphate (alum) is added to water with a pH of 7.2. Based on the reaction below,…
A: The given reaction is the hydrolysis of the salt. The salt here is Al2 (SO4)3 which on hydrolysis…
Q: 9. What is the current that must be passed through solution AuCl3 for 200 second to precipitate 3g…
A: As per our guidelines, we are supposed to answer only one question. Kindly, repost other question as…
Q: Determinethe concentration of an EDTA solution given that a 20.00 mLsample of 0.02491M Zn2+was…
A: Dear Student EDTA is a complexometric ligand and is used in complexometric titrations. EDTA is a…
Q: Describe the differences between the following and list any particular advantages possessed by one…
A: Since you have posted a question with multiple subparts, we will solve the first three subparts for…
Q: Complete and balance the following equations, and identify the oxidizing and reducing agents: MnO4…
A: To balance the below redox reaction in the basic medium. MnO4−+Br−→MnO2+BrO3−
Q: 6. What is the pH of bleach with [H3O+] = 4.2 × 10–12 M?
A: H3O+=4.2x10-12 MpH=-log H3O+ =-log 4.2x10-12
Q: Write the reactions of EDTA in the ionization steps.
A: EDTA stands for - Ethylenediaminetetraacetic acid is polyprotic acid with 4 different ionization…
Q: 5. Calculate the emf at 298 K generated by the cell: Cr20, (aq) + (aq) + 61 (aq) → 2Cr*(aq) + 312(s)…
A: Given : We have to calculate Ecell for the reaction.
For EDTA,what is meant by aY4- and how does it vary with pH?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- Calculate the pH of the cathode compartment for the following reaction given Ecell = 3.01 V when [C₁³+] = 0.17 M, [A1³+] = 0.27 M, and [Cr₂O7²- ] = 0.53 M. pH = 2- 2 Al(s) + Cr₂O7²- (aq) + 14H+ (aq) → 2 Al³+ (aq) + 2 Cr³+ (aq) + 7H₂O(1)OCN-(aq) + OCI-(aq) → CO₂2-(aq) + N2(g) + Cl(aq) (basic media)From the reaction CaCO3+CO2+H2O= Ca2+ + 2HCO3- A.) Show how it affects the chemistry of water, alkalinity and hardness of water B.) Its relationship to microbial degradation of organic matter
- Why is commercially available EDTA in the form of disodium salt, Na2H2Y.2H2O? to decrease EDTA solubility in water because of difficulty in synthesizing other forms of EDTA to increase the binding capacity of EDTA with metal ions to increase EDTA solubility in waterA copper storage tank containing dilute H2SO4 at pH = 3 is blanketed with hydrogen at 1 atm. Calculate the maximum Cu" contamination of the acid in moles Cu per liter. What is the corresponding contamination if the hydrogen partial pressure is reduced to 10* atm?The following cell was found to have a potential of —0.492 V: Ag|AgCl(sat’d)||HA(0.200 M),NaA(0.300 M)|H2(1.00 atm),Pt Calculate the dissociation constant of HA, neglecting the junction potential.
- Which of the following does NOT form a 1:1 ratio with an EDTA molecule? * O Li O Mg O Bi O AICalcium in powdered milk is determined by dry ashing a 3.00g sample then titrating the calcium with 12.10mL EDTA solution. The EDTA was standardized by titrating 10.00mL of a Zn solution by dissolving 0.632g Zn metal in acid and dilution to 1.00L (10.80 mL EDTA required for titration). What is the concentration of Ca in the powdered milk in ppm?The reaction of divalent manganese with oxygen in aqueous solution is given as follows: Mn2+ + 1/2O2(aq) + H2O = MnO2(s) + 2H+ The equilibrium constant (K) for this reaction is 23.7. It has been found that a lake water sample that contains no oxygen at 25 C, pH = 8.5, originally contained 0.6 mg/L of Mn2+. The sample was aerated (atmospheric conditions of the dissolved oxyen concentration is 9.2 mg/L) and after 10 days of contact with atmospheric oxygen, the Mn2+ concentration was 0.4 mg/L. The molecular weight of Mn is 55, O is 16 and H is 1. The change in free energy of formation at standard conditions (kcal/mole) are as follows: Mn2+ = -54.4, O2(aq) = +3.93, H2O = -56.69, MnO2(s) = -111.1, H+ = 0. (a) Assuming that the pH remains constant during aeration, will the precipitate continue to form after the measurement on the tenth day? (b) What should the Mn2+ concentration be (in moles/L) at equilibrium, assuming that pH and presence of dissolved oxygen are the same as in part "a".…
- 1) Balance the following in acidic solution: (a) Н2О + Sn2+ Н,0 + Sn++ (b) PBO2 + Hg –→ H* + P²+ (c) Al + Cry0; – A+ + Cr+A solution was prepared by dissolving about 3.0 g of NaH2Y2·2H2O in approximately 1 L of water and standardizing it against 50.00-mL aliquots of 0.004423 M Mg2+. An average titration of 30.27 mL was required. Calculate the molar concentration of the EDTA.Draw the structure of EDTA. What are the different tetrabasic forms of EDTA? Describe theirindividual reactivities.