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The first half-cell has [Zn2+] = 1.35 M, and the second half-cell has [Zn2+] = 3.75 x 10-4 M. A concentration cell is constructed with two Zn(s)- Zn 2+(aq) half-cells.
Determine the pH of the solution in the cathode compartment of the cell pictured when PH2 = 1.0 atm,[Zn2+] in the anode compartment is 0.10 M, and cell emf is 0.542 V
Obtain the integrated rate equation for a reversible reaction of stoichiometry. The reaction is first order from left to right and second order from right to left. At t=0, [A]=[A]0,[Y]=[Z]=0.
Discuss in sufficient detail how a buffer resists changes to pH when a small amount if an acid or base is added to a buffer solution. A solution consisting of a weak acid and the salt of its conjuga
Phosphoric and Carbonic acid are the main acids used to buffer the blood to a pH of 7.4. Plot a fractional composition graph (hand written is fine or computer generated) of both acids pointing out w
Determine the procedure needed for this standardization? An acidic solution has already been made; one needs to standardize it to determine its "known" concentration.
Consider a mixture of two gases, A and B, confined to a closed vessel. A quantity of a third gas, C, is added to the same vessel at the same temperature.
The atomic mass of born is10.81 amu. Boron obtained from the borax deposits in Death Valley consists of 2 isotopes. They are boron-10, boron-11 with atomic masses of10.013 amu and 11.009 amu, respec
Calculate how many significant figures should be used to express the mass of anyone using the scale whose mass is between 10 and 99kg. A bathroom-type scale is calibrated in the tenths of a kilogra
One is filled with Hydrogen gas, the other with Oxygen, each at the same pressure. Both containers are heated above 100 degrees C until the pressure in each is 1.60 atm.
Calculate the pH and concentrations of K+, H+, OH-, H2PO4-, PO43- , HPO42- from a1.00L solution which is having .0250 mol KH2PO4 and 0.030 mol KOH.
Explain what volume of is required to neutralize the NaOH solution? Calculate the ph of the acid/base solution when the following volumes of HNO3 have been added.
Calculate the ph for this reaction when half the amount of titration requires red to reach the equivalent point has been added.
If sodium iodide is added to the reaction mixture, the rate of methanol formation is dramatically increased (i.e. sodium iodide is a catalyst). Reaction of bromo methane with sodium hydroxide in wat
Determine the solubility of p-dibromo benzene in benzene at 20 and 40 degrees C assuming that ideal solutions are produced. The enthalpy f fusion of p-dibromo benzene is 13.22kJ/mol at its m
Draw the general structure of a lipid and label the hydrophilic portion and circle the hydrophobic portion. The functional group found in all Lipids is esters.
Determine how many liters of liquid nitrogen are produced when the 500.0 L of nitrogen gas are liquefied at this temperature? Liquid nitrogen is obtained by condensing gaseous nitrogen found in air
1-propse a reaction that will form BaSO4(s) to be used as anx-ray contrast agent for the diagnosis of using a soluble form of SO4 (2-) and a soluble form of Ba two separate solutions that will be mi
A 50.00-mL sample which is having an analytic gives a signal of 11.5(arbitrary units). A second 50-mL aliquot of the sample, which is spiked with 1.00-mL of a 10.0-ppm standard solution of the
Illustrate the skeletal structure of one of the enantiomers (that means you have to show wedge/dash bond(s)) produced when the (Z)-3-methyl-2-pentene reacts with Br2 in the presence of water.
Determine the value of the rate constant for this reaction? It takes 30.0 min for the concentration of a reactant in a second-order reaction to drop from the 0.40 M to 0.30 M.
Provide the bond order for the C-C bond. Name this type of bond. Explain the orbital hybridization around each C atom and hence determine the spatial distribution of bonding orbital around each carb
The solution has an osmotic pressure of 1.43 atm at 27°C. A quantity of 7.480 g of an organic compound is dissolved in the water to make 300.0 mL of solution.
If 2 N NaOH were used in the workup of this reaction instead of bicarbonate, explain what unwanted product might be obtained? Find out to protons that would become significantly deshielded on synth
Explain what quantity of heat in kJ is produced when 100 mL of 1.0 M H2SO4 is mixed with 100 mL of 1.0 MKOH? The heat of neutralization for a strong acid in dilute water solution is about 60 kJ mol