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Question- The electrochemical cell described by the cell notation has a standard emf of 0.68 V. Calculate the maximum electrical work (kJ) the cell has done if 1.7200 mol of MnO4-(aq) (Molar Mass - 118.94 g/mol) reacts. Round your answer to three significant figures.
Pt(s) l VO2+(aq), VO2+(aq), H+(aq) ll H+(aq), MnO4-(aq) l MnO2(s) l Pt(s)
St. Red. Pot. (V)
VO2+/VO2+ +1.00
MnO4-/MnO2 +1.68
Faraday's Constant
F = 96485 C
Using textbook reference solve the reactions given in above problem
A pure gold ring and pure silver ring have a total mass of 15.7 g. The two rings are heated to 65.3 degree celcius and dropped into a 13.3 mL of water at 21.2 degree celcius. When equilibrium is reached, the temperature of the water is 23.3 degree..
Calculate the approximate molarity of this solution from the volume, percent composition, and density.
Define a flask contains 250ml of a 0.125 solution of Na3PO4. If A sample containing 0.250 moles of Na+ is added to the solution. Presuming no volume change, define what is the new molarity of the new solution
If you had a stoppered flask with basic luminol and then opened it to the air, why would the chemiluminescence be more pronounced than with the flask stoppered? Why is the chemiluminescence even more pronounced with the ferricyanide/hydrogen perox..
How many moles of AgCl(s) will dissolve in 1.00L of 0.100 M NaCN and what are the concentration of the various ions in solution. K = 7.08 x 1019 for the reaction Ag+(aq) + 2 CN- ? Ag(CN)2-
Nitrogen and 20% of Oxygen, and that the pressure at sea level is 1.000 atmosphere, calculate the partial pressures of each gas and the total gas pressure in the middle of the stratosphere at 35.00km altitude, where T=240.0 K.
an empty volumetric flask weighing 60.42 grams weighed 309.60 grams when filled with water. after emptying the water
What is the mass (in grams) of the precipitate when 7.32 g of iron(II) nitrate reacts in solution with excess sodium carbonate
The rate constant for the decomposition of CH3CHO is 0.0105 dm^3/mol* at 700 K. If the activation energy for this reaction is 188kJ, find the rate constant at 800 K.
A second 1.0 mL sample is spiked with 2.0 microliters of a 1000 ppb Pb2+ standard and diluted to 5.0 mL, yielding an Sspike of 0.4. Determine the concentration of Pb2+ in the original sample of blood.
Problem- A solution is prepared by addind 3.6 mol of KCN to 1.00 L of 0.16 M Zn(NO3)2. What is the equilibrium concentration of Zn2+ ions. (Kf=4.2x10^19 for Zn(CN)4^-2
A technician would like to find the concentration of a NaOH solution using KHP as the primary standard. The reaction of NaOH and KHP is as followed:
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