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Consider the standard cell at 25C based on the following half-reactions. Pb^2+ + 2e^- --> Pb E=-0.13V Zn^2+ + 2e^- --> Zn E=-0.76V To the standard cell, OH-, is added to the zinc compartment causing precipitation of Zn(OH)2. After precipitation is complete, the concentration of the OH- is 0.10M and the measured cell potential is 1.05V. calculate the Ksp value for Zn(OH)2(s) Zn(OH)2-> Zn^2+(aq) + OH-(aq) Ksp=?
A 128.2mL sample of 0.15M solution of H3PO4 is titrated with 0.18M NaOH. What volume of base must be added to reach the third equivalence point
The elemental mass percent composition of malonic acid is 34.63% C, 3.87% H, and 61.50% O. Determine the empirical formula of malonic acid. Express your answer as a chemical formula.
The partial pressure of CO2 inside a bottle of soft drink is 4.0 atm at 25°C. The solubility of CO2 is 0.12 mol/L. When the bottle is opened, the partial pressure drops to 3.0 * 10-4 atm. What is the solubility of CO2 in the open drink? Express yo..
Will a precipitate of magnesium flouride form when 200.0 milliliter of 1.9x10^-3mol/Litre MgClsubnumber2 solution is added to 300.0 milliliter of 1.4x10^-2mol/Litre NaFsolution?
Benzene is a trace component of gasloine. What is the mole ratio of benzene to n-octant in the vapor above a solution of 40.0% benzene and 60.0% n-octane by the mass
Estimate the temperature at which calcium carbonate is likely to decomp under 1atm of pressure. Reaction: CaCO3(s) -> CaO(s) + CO2 (g) For this rxn: dHstandard = 177.8 kJ and dS standard= 160.5 J/K (notice unit differences)
Calculate the concentrations of ALL species in a 0.740 M Na2SO3 solution. The ionization constants for sulfurous acid are Ka1
Barium sulfate is a very insoluble compound. Please give reasons for compounds like barium sulfate or barium phosphate to be insoluble
Equal volumes of the following pairs of solutions are mixed. Which pair will produce a buffer solution
Calculate the dryness fraction of the steam between the separator and the throttle, and hence the dryness fraction of the steam being bled from the system.
How much heat is required to raise the temperature of 42.5 g of water from its melting point to its boiling point?Express your answer numerically in kilojoules.
Determine the mass of propylene glycol neded to substitute one gallon of ethylene glycol and also find out the volume of propylene glycol, required to get the same antifreeze protection as one gallon of ethylene glycol.
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