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The half-cell, Tl | Tl+(1 mol L-1), is connected to a Pt | H+ | H2(1 atm) half-cell in which the concentration of H+ is unknown. The measured cell voltage is 0.0841 V and the Pt | H2 | H+ half-cell is the cathode. Standard reduction potentials are given on the next page. (a) Draw a diagram of the electrochemical cell, labeling all electrodes and solutions. (b) What is the pH in the Pt | H+ | H2 half-cell? (c) What is the value of the equilibrium constant for the reaction occurring in this cell?
Calculate Ka for acetic acid in both the molal and molar standard states. Use as many sig figs as your calculations in part b.) warrant.
The heat capacity of solid and liquid ethanol are 0.97 J g-1 K-1, respectively. How much heat is required to convert 50.0 g of ethanol at -150 deg. celsius to the vapor phase at 78 deg. celsius
The chemist used a thermometer that was miscalibrated by 2(degrees)c over the entire thermometer scale. will this factory error cause the reported energy of neutralization to be higher, lower, or unaffected? explain.
The Greek mathematician Archimedes is credited with discovering how to verify the amount of pure gold in an irregularly shaped object (e.g., a crown) by placing it in water. How much water should be displaced by a pure gold object having a mass of..
What term expresses the ratio of moles of reactants and products according to the coefficients in the balanced chemical equation?
Rubidium has two naturally occurring isotopes: Rb-85 with mass 84.9118 amu and a natural abundance of 72.17%, and Rb-87 with mass 86.9092 amu and a natural abundance of 27.83%.
Rutherford fired positively charged particles at metal foil and concluded that most of the mass of an atom was..a) in the electrons.
if a total of 702 mol of NaHCO3 and 2.4 mol of C6H8O7 react, how many moles of CO2 and Na3C6H5O7 will be produced?
a sample of a gas has a mass og 0.311g. its volume is 0.225 L at a temperature of 55 degrees C and a pressure of 886 mmHg. find its molar mass
Write equations for (a) the hydrolysis of TiCl4 and (b) the neutralization of Ba(OH)2
What is the final volume of the balloon. Assume that the pressure inside and outside the balloon has the same value. Ans. V = 34.8 L
Find the approximate pH range suitable for the separation of Fe3+ and Zn2+ ions by precipitation of Fe(OH)3from a solution that is initially 0.015 M in both the ions. Assume a 99% precipitation of Fe(OH)3.
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