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The overall formation constant for Cu(NH3)42+ is 1.1x1013 at 25oC. What is [Cu2+], in moles per litre, at equilibrium when 8.3 g Cu(NO3)2 is dissolved in 0.500 L of 1.00 mol/L NH3(aq)? Assume that there is no volume change when the Cu(NO3)2 is added to the solution. Give your answer accurate to two signficant figures. Enter 1.23x10-10 as 1.23e-10. Give your answer in mol/L. Molar masses (in g/mol) N, 14.01 O, 16.00 Cu, 63.55 Hint: Assume that Cu2++4NH3 --> Cu(NH3)42+ is the only important reaction. Notice that the equilibrium constant for this reaction is very large. One way to approach the problem is to imagine the reaction proceeds to equilibrium by first going 100% to completion and then backing up a little..
Assuming that all "other" reactants used in the synthesis of the complex are in excess, calculate the theoretical yield of the complex.
How would the ground-state energy levels of X and H compare (where X is an atom with one electron like Hbut different energy levels)? For X: E = - (RH / n3) and RH is the same as H (2.179 ×10?18J).
It takes 48.0 to raise the temperature of an 9.10 piece of unknown metal from 13.0 to 25.0. What is the specific heat for the metal?
Cacodyl, a compound containing arsenic, has an almost intolerable garlic-like odor. Its molar mass is 210g/mol and it is 22.88% C, 5.76% H and 71.36% As. Determine its emperical and molecular formulas.
The density of water is 1.00 g/ml, the density of dichloromethane is 1.32 g/ml. If you mix dichloromethane and water together, which layer will be on top and which layer will be on the bottom
The normal boiling point for H2Se is higher than the normal boiling point for H2S . This can be explained by larger dipole-dipole forces, larger dispersion forces, and larger hydrogen-bond forces for H2Se
Calculate the freezing point of 0.15m calcium chloride aqueous solution. Assume that the molal freezing point depression constant
Sodium formate, HCOONa, is a weak base and undergoes hydrolysis in water. Determine the OH- concentration at equilibrium in a solution
Draw the skeletal structure of all the peptides you can make combining one of each of these amino acids. Show your products in the unionized state and omit any stereochemistry.
A current of 5.64 A is pass through a Ni(NO3)2 solution. How long (in hours) would this current have to be applied to plate out 8.80 g of nickel
H2S (aq) is a polyprotic acid, meaning it can dissociate its hydrogen ion more than once. However, HS- (given its negative charge as well as its extra hydrogen ion) can act as either a base or an acid
when comparing solution of equal concentration, what is the relationship between the pH of an acid solution and the acid's Ka. When comparing solutions of equal concentration, what is the realtionship the pH of a basic solution and the base's kb
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