3.1.2 Manganese in Acid Solution 1.70 V 0 56 V 2.26 V 0.95 V 1.51 V 1.18 V Mno, -Mno,2- MnO, MnO, Mn° + Mn2+ Mn 1.51 V Q1. Will MnO,- undergo a 2 e reduction to oxidize water to dioxygen gas in acid solution? (a) Write down balanced half-equations for the two half-cells and the appropriate potentials.

3.1.2 Manganese in Acid Solution 1.70 V 0 56 V 2.26 V 0.95 V 1.51 V 1.18 V Mno, -Mno,2- MnO, MnO, Mn° + Mn2+ Mn 1.51 V Q1. Will MnO,- undergo a 2 e reduction to oxidize water to dioxygen gas in acid solution? (a) Write down balanced half-equations for the two half-cells and the appropriate potentials.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter22: Bulk Electrolysis: Electrogravimetry And Coulometry

Section: Chapter Questions

Problem 22.30QAP

See similar textbooks

Similar questions

The capacity of batteries such as the typical AA alkalinebattery is expressed in units of milliamp-hours (mAh). AnAA alkaline battery yields a nominal capacity of 2850 mAh.(a) What quantity of interest to the consumer is beingexpressed by the units of mAh? (b) The starting voltage of afresh alkaline battery is 1.55 V. The voltage decreases duringdischarge and is 0.80 V when the battery has delivered itsrated capacity. If we assume that the voltage declines linearlyas current is withdrawn, estimate the total maximumelectrical work the battery could perform during discharge.
2. A batch of parts is plated with copper in an electrolytic bath running at 0.15V forexactly 2 hours. What is the energy cost if the electric utility charges company$ 0.05 per kWh? (provide the given and required to find in the problem) (Kindly provide a CLEAR and COMPLETE solution) (Answer should be typewritten)
In the electrolysis of water, how long will it take to produce 1.000 × 102 L of H2 at STP (273 K and 1.00 bar) using an electrolytic cell through which a current of 58.50 mA flows? (Answer in Years please!)
Oxidation of hydrogen gas to water happens at the anode, while reduction of oxygen gas to hydroxide happens at the cathode. A pure hydrogen at the anode side at 80 kPa and uses air at 1 bar as the oxygen source in the cathode side. At a temperature of 30oC. Assuming no side reactions due to the existence of nitrogen in the cathode, answer the following: a. What is the overall reaction? How is the overall reaction it different from hydrogen combustion?b) Determine the standard cell potential, Eocellc) Determine the actual cell potential, Ecell
Oxidation of hydrogen gas to water happens at the anode, while reduction of oxygen gas to hydroxide happens at the cathode. A pure hydrogen at the anode side at 80 kPa and uses air at 1 bar as the oxygen source in the cathode side. At a temperature of 30oC. Assuming no side reactions due to the existence of nitrogen in the cathode, answer the following: a. What is the overall reaction? How is the overall reaction it different from hydrogen combustion?b) Determine the standard cell potential, Eocellc) Determine the actual cell potential, Ecelld) What can you say about the spontaneity of the actual fuel cell reaction at low temperatures? Will spontaneity decrease or increase at lower temperatures?
. Consider a galvanic cell with the anode containing a Zn metal electrode and a 0.10 M Zn(NO3)2solution and the other half-cell containing a Sn metal electrode and a 0.10 M Sn(NO3)2 solution. If themeasured Ecell value is +650 mV and the Zn2+/Zn reduction potential is assumed to be −790 mV, what isthe Sn2+/Sn reduction potential? Show all work.
It is desired to assemble a concentration cell with a potential of 120 mV withtwo Zn(s) electrodes immersed, each one, in a ZnSO4 solution. What should be theratio between Zn2+ activities in the two electrodes to reach the desired potential?
2) If 25g of NaCl is dissolved into a final volume of 500mL, what is the percent (w/v) concentration of NaCl in the solution? COMPUTE 3) How will you prepare 200mL of 0.3M NaCl prepared? COMPUTE and Include a short instruction in the preparation. 4) From a stock solution of 1M Tris solution, how will you prepare 400mL of 0.2M? COMPUTE and Do not forget to include a short instruction in the preparation. 5) How is 4mL of 50mM NaCl solution be prepared from a 2M NaCl stock? COMPUTE and Do not forget to include a short instruction in the preparation. 6) What is the molar concentration of a 10% NaCl solution? (At 25⁰C, the density of 10% NaCl is 1.09 g/ml ) COMPUTE
Arsenic(III) sulfide is oxidized with concentrated nitric acid into arsenic acid and sulfuric acid, with release of nitrogen dioxide gas. Compile the balanced chemical eqn for this reaction using oxidation-reduction electron-ion half reaction method (must show explicitly your work). The sum of all stochiometric coefficients in this chemical eqn is: A 30 B 50 C 70 D None of those is correct. If so, what is your value?
Jansen Gas creates three types of aviation gasoline(avgas), labeled A, B, and C. It does this by blendingfour feedstocks: Alkylate; Catalytic CrackedGasoline; Straight Run Gasoline; and Isopentane.Jansen’s production manager, Dave Wagner, hascompiled the data on feedstocks and gas types inTables 4.6 and 4.7. Table 4.6 lists the availabilitiesand values of the feedstocks, as well as their keychemical properties, Reid vapor pressure, and octanerating. Table 4.7 lists the gallons required, theprices, and chemical requirements of the three gastypes. Table 4.6 Data on Feedstocks Feedstock Alkylate CCG SRG Isopentane Gallons available (1000s) 140 130 140 110 Value per gallon $4.50 $2.50 $2.25 $2.35 Reid vapor pressure 5 8 4 20 Octane (low TEL) 98 87 83 101 Octane (high TEL) 107 93 89 108 Table 4.7 Data on Gasoline Gasoline A B C Gallons required (1000s) 120 130 120 Price per gallon $3.00 $3.50 $4.00 Max Reid pressure 7 7 7 Min octane 90 97 100 TEL level Low High High Note that each feedstock…
Q/ ture or false 1- The difference between wet and dry corrosion, in the first case it occurs in the presence of moisture and the second in its absence * 2- It is necessary to fix the names of the equipment on the illustrative curve of the industrial process * 3- The flow curves are classified according to the number of reactors and the mechanism of separation or non-separation of the products * 4- In the processes that involve the purification of raw materials and products, it is preferable to purify the raw materials by adsorption, while the products are purified by washing, stripping and absorption. 5- The amount of dissolved substances in well water differs greatly from surface water due to the difference in temperature. * 6- The biological waste has no significant effect on the efficiency of the flow, but rather its effect on the toxicity of the water used for industrial purposes. 7- Several methods are used to remove unacceptable odors from water, including chemical…
Angeline performed an experiment on vitamin C content. She purchased bell peppers of different colours from local wet market. Bell pepper samples were cut, blended and homogenized with a fixed portion of water. Subsequently, coulometric titration was performed using iodine under constant current of 60 mA. In one of the experiment replicate,starch end point was achieved after 18 minutes. Suppose that bell pepper sample recorded initial mass of 115 g, deduce it’s vitamin C (176 g/mol) content in percentage. (F = 96500C)