Q: Q1) a) What is i) a standard solution? ii)a reduction-oxidation (redox) reaction? b) A standard…
A: Q1) b) i) KMnO4 is purple in color. Because of its bright purple color, it acts as a self indicator.…
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A: In the given question we have to calculate the activity of Zn2+ ion.
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A: Given : Au3+(aq) + 3e- → Au(s) E° = 1.50 V Cu+(aq) + e- → Cu(s) E° = 0.52 V…
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A: Zn(OH)2 (s) ⇔ Zn2+ (aq) + 2OH- (aq) Initial --…
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A: It is given that 1.25 L of a 1.0 M solution of CuSO4 is electrolysed under a current of 3.4 A to…
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Q: Mg es)* AgNO3 caq) -> Agcs) + Mg (NO;)z caq) + (S) Ag*cap) + e" >Ag es) E°= 0. 200 Y Mg 27ag) • 2e…
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A: Solution -
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Q: The activity of Zn2+ in a saturated solution with Zn(OH)2 with 0.00500 M KNO3 (Ksp = 1.20 X10-17, y…
A: Given: Ksp of Zn(OH)2 = 1.20 X 10-17 γ of Zn2+ = 0.748 And γ of OH- = 0.926
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Q: Given the standard reduction potentials (Eo ’) for ubiquinone (Q) Q + 2H+ + 2e- ---> QH2 E o ’ =…
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Q: Q7. You are given a saturated solution of Zn(OH)2 with a Ksp of 3.0 x 10-16. From this, find the…
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Q: Crs) + Znac) Aus) + Agtac) Zns + Cažac) Als) + Fe → a) Als) + Feac) b) Crs) + Znac) c) Aus + Agtac)…
A: Those chemical reaction can occurs in which metals have high reactivity or good reducing agent. The…
Q: The activity of Zn2+ in a saturated solution with Zn(OH), with 0.0100 M KNO3 (Ksp = 1.20 X10-17, y…
A: Given: Ksp of Zn(OH)2 = 1.20 X 10-17 γ of Zn2+ = 0.676 And γ of OH- = 0.900
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Q: What ratio of Pb 2+ /Zn 2+ concentration is needed to reverse the following reaction at 25°C. Zn +…
A: Given: The cell reaction is, Zns+Pb2+aq→Zn2+aq+Pbs......(1) The reduction potential of Zn2+/Zn and…
Q: The oxidation of peroxodisulfate ion: S2O82–(aq) + 2I–(aq) à 2SO42–(aq) + I2(aq) Which of the…
A: Introduction Addition of iodine into a given molecule is characterized as iodination reaction. Hans…
Q: 60 50 $40 30 20 10 Course of Reaction Calculate the AH of the reaction. Potential Energy (kJ)
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Q: 93. Calculate the values of AGO and Eºcell of the following reactions: Cu(s) + 2Fe ³+ (aq)--Cu2+(aq)…
A: Since you have asked multiple questions, we will solve the first question for you. If you want any…
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Q: For the redox reaction Sn2+ + 2Fe+ = Sn+ + 2FE2+, PianyFe) = 0.68V, %3D Saavysac) = 0.14V, is it…
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Q: [Revlew Topics] [References] Calculate the pH of the cathode compartment for the following reaction…
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Q: Calculate the equilibrium constant at 37°C given ∆G=-423kcal.
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Q: The pH of a saturated solution of Fe(OH)2 is 9.3 . Calculate the ksp of Fe(OH)2
A: Given, pH of FeOH2 is 9.3 FeOH2 → Fe2+ +2OH- According to the formula : pH + pOH =14…
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Q: Calculate the activity of IO3 in a saturated solution of La(IO3)3 in water. Ksp = 1.0x 10-11 O…
A: Given: Ksp of La(IO3)3 = 1.0 × 10-11
Q: How many coulombs of charge are required to cause reduction of 0.5 mle of Cu2+ to Cu? Cu2+(aq) +…
A: Charge of one electron = 1.602×10-19 C Faraday (F) :- The charge of 1 mole (6.022×1023) electrons…
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Q: 6. A. Calculate the potential of the cell where the reaction: 2 HCIO - → HCIO + CIO3 + H* occurs if:…
A: For this concentration cell, Potential of the cell will be, Ecell = -0.0591nlog Q where Q =…
Q: Given the standard reduction potentials (Eo ’) for ubiquinone (Q) Q + 2H+ + 2e- ---> QH2 E o ’ =…
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Q: What is the theoretical slope at 25 ◦C of the EMF −ln(cOx/cRed) line for the redox system studied in…
A: Given- R=8.314Jmol^-1K^-1 F=96485Cmol^-1 T=25°C = 273+25 = 298 K
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Q: For a saturated solution of Zn(OH)2, calculate the activity of Zn and its effective pH in: a) water
A: As per the guideline, since you have asked multiple questions, we have solved the first question for…
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- A 1.000 g sample containing chlorides, iodides and inert materials was treated with dilute nitric acid followed by AgNO3. A precipitate of AgCl (143.32) and AgI (234.77) was produced and weighs 0.9238 g. On heating in a current of Cl2, the AgI is converted to AgCl, and the resulting product weighs 0.7238 g. Find the percentage of a) NaI (149.89) and b) NaCl (58.44) in the sampleThe amount of iron in a meteorite was determined by a redox titration using KMnO4 as the titrant. A 0.4185 -g sample was dissolved in acid and the liberated Fe3+ quantitatively reduced to Fe2+, using a reductor column. Titrating with 0.0051 M KMnO4 requires 23.44 mL to reach the end point. Determine the %w/w Fe2O3 in the sample of meteorite. (Fe = 55.845 amu, Fe2O3 = 159.69 g/molWhen I was a boy, I watched Uncle Wilbur measure the iron content of runoff from his banana ranch. He acidified a 25.0-mL sample with HNO3 and treated it with excess KSCN to form a red complex. (KSCN itself is colorless.) He then diluted the solution to 100.0 mL and put it in a variablepathlength cell. For comparison, he treated a 10.0-mL reference sample of 6.80X 1024 M Fe31 with HNO3 and KSCN and diluted it to 50.0 mL. The reference was placed in a cell with a 1.00-cm pathlength. Runoff had the same absorbance as the reference when the pathlength of the runoff cell was 2.48 cm. What was the concentration of iron in Uncle Wilbur’s runoff ?
- 1. A Cr3+ solution is electrolyzed using a current of0.365 A. What mass of Cr(s) (51.9661) is plated outafter 10 hours?2. When an aqueous solution of CuSO4 is electrolyzedcopper metal is deposited. If a constant current waspassed for 5.00 h and 404 mg of Cu (63.546) metal wasdeposited, what was the current?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.Equations for the chemiluminescence determination of SO2 are given on page 383. Derive an expression for the relationship between the concentration of SO2 in a sample, the luminescence intensity, and the equilibrium constant for the first reaction.
- What cathode potential (versus SCE) would be required to lower the total Hg(II) concentration of the following solutions to 1.00 10-6 M (assume reaction product in each case is elemental Hg): (a) an aqueous solution of Hg2+? (b) a solution with an equilibrium SCN- concentration of 0.100 M? Hg2+ + 2SCN- Hg(SCN)2(aq) = Kf = 1.8 107 c) a solution with an equilibrium Br- concentration of 0.100 M? HgBr42++ 2e- Hg(l) + 4Br- E0= 0.223 VSagrm.m.A 20 ml aliquot of malonic acid solution was treated with 10.0 ml of 0.25M Ce4+ leading to the reaction CH2(COOH)2 + 6Ce4+ + 2H2O ® HCOOH + 2CO2 + 6Ce3+ + 6H+ After standing for 10 minutes at 60oC, the solution was cooled and the x’ss Ce4+ was titrated with 0.1M Fe2+, requiring 14.4 ml to reach the ferroin end point. Calculate the M of the malonic in the sample.
- Solve this gravimetric analysis problem. 0.4960 g sample of CaCO3 (mw= 100) is dissolved in an acidic solution. The calcium is precipitated as CaC2O4. H20 (mw = 146) and the dry precipitate is found to weigh 0.6186 g. What is the percentage of CaO (mw=56) in the sample?To measure the iron content of runoff from a ranch a 25.0 mL sample of run off was acidified with HNO3 and treated with excess KSCN to form a red complex. (KSCN itself is colorless.) The solution was then diluted to 100 mL and put into a variable pathlenght cell. For comparison, a 10.0 mL reference sample of 6.80 x 10-4 M Fe3+ was treated with HNO3 and KSCN and diluted to 50.0 mL. The reference was placed in a cell with a 1.00 cm pathlenght. The runoff had the same absorbance as the reference when the pathlenght of the runoff cell was 2.48 cm. What wa the concentraton of iron in the runoff?A solution containing 50.0 mL of 0.100 M EDTA buffered to pH 10.00 was titrated with 50.0 mL of 0.020 0 M Hg(CIO4): S.C.E. || titration solution | Hg(l) From the cell voltage E = –0.027 V, find the formation constant of Hg(EDTA)²¯