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Measured cell emf are the basis for standard electrode potentials. chemistry assignmentsA method for the presentation of the data obtained from measurements of the equilibrium emf of electrochemical cells must now be developed. One expects (a thermodynamic proof of this is given in the description) that varying the concentration of any reagents involved in the electrode process will affect the emf of the cell. In view of this, the emfs of the cell with the reagents at standard states are reported. In keeping with standard states introduced with these standard state conditions are again chosen to consist of gases at unit activity, implying for most gases approximately 1 bar pressure, and solutes also at unit activity. For solutes, which for electrochemical cells are frequently ions, the activities can be appreciably different from molar concentrations. How activity coefficients can be determined to recognize that a standard state is chosen and that the emf's that cells would have for their variable reagents at unit activity are tabulated.It is impractical, however, to list the emf's of all possible combinations of electrodes. It would be much more convenient to have some means of tabulating the relative electron accepting powers of the individual electrodes. This can be done by tabulating the emf of cells composed of a selected reference electrode and a variety of other electrodes. Quite arbitrarily, it is agreed that the hydrogen electrode, with a hydrogen pressure of 1 bar and a unit hydrogen ion activity in the solution, will be used as the reference electrode.Tabulations can then be given of the emf measured for cells with the standard hydrogen electrode on the left and another electrode on the right. For example:Pt| H2 (1 bar)| HCl (a = 1) | Cl2 (1 bar) | PtThe emf of this particular cell is found to be + 1.3592 V and it is this value which is given for the Pt| Cl2 |Cl-electrode.Such tabulated values also are interpreted as electrode emf's based on a zero emf being assigned to the reference hydrogen electrode. If the value is for all reagents at unit activity, such electrode potentials are known as standard electrodes potentials, indicated by the symbol €°. The results for the hydrogen chlorine cell can now be interpreted by recalling that the reported cell emf of +1.3592 V corresponds to the process in which electrons are gained from the external circuit by the right electrode and delivered to the external circuit by the left electrode.
Q. What do you meant by Payroll Tax? Payroll Tax:A tax which is levied on current employment or payrolls (collected either as a fixed amount per employee or as a percentage of
Use two market diagrams to explain how an increase in state subsidies to public colleges might affect tuition and enrollments in both public and private colleges.
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-1- ASSIGNMENT #1 The demand function for Product X is given by: Qdx = 80- 2Px- 0.05P²x -0.2Py + 4Pz + 0.01I+ 2A Where: Px Price of good X $120.00 Py Price of related good y $100.0
Give two level of incomes 100$ and 150$ DRAW demand curve for individual a & b and then draw market demand curve for these two different kind of income
Cost Function for Savings and Loan Industry * The empirical estimation of long run cost function can be useful in restructuring of the savings and loan industry in wake of savi
A surplus on the current account of balance of payments can be financed by? 1. Inflow capital on capital account 2. A surplus on the government budget deficit 3. lending abroad on
hi i need price,cross and income elasticity of toyota corolla car. its only small part of the assignment topic so its need around 500 words. thanks ishwor
Niche Operators: It is assessed by TRAI that despite the USO support, existing big service providers would not be interested to serve about 50 per cent of the villages. To add
SUMMARY OF THEORY OF PRODUCTION
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