In the reaction shown below, what species is oxidized? 2NaI + Br2 → 2NaBr + I2

A) I–

B) I2

C) Br2

D) Na+

E) Br–

Estimate the heat of vaporization of diethyl ether at its normal boiling point using Trouton’s rule and Chen’s rule and compare the results with a tabulated value of this quantity. Calculate the percentage error that results from using each estimation. Then estimate ΔH^v at 100°C using Watson’s correlation.

19. Why are receptors and substrates sometimes explained in terms of locks and keys?

26. Why is a drug

what is the percentage of the R enantiomer in a sample of Carvone that has a specific rotation of 30, given that the specific rotation of (R)- CARVONE IS -61

Why should we boil water and shake the solution in the volumetric determination of alkalinity of soda ash?

Secondary prevention of type II diabetes includes monitoring of your patient glucose control. Your patient comes in confused about their blood tests results. Although he understands his fasting plasma glucose result, he does not understand what the HbA1c percentage means. You explain that an HbA1c level of 8.5% is equivalent to a glucose level of how many mg/dl?

An unknown compound has a molecular mass of 180.15 g/mole and an elemental analysis showing that it is 60.00% C and 4.48% H. Determine the molecular formula.

Consider the complex trans-Mn(NH₃)₄(CN)₂. What point group is this complex?

What is the symmetry for each of the d orbitals?

Draw the expected d orbital splitting, and fill with electrons.

In units of Bohr magnetons, what is the electronic contribution to the magnetic susceptibility of this complex?

If we add 1 equivalent of cyanide to a solution of the above complex to replace a NH₃ ligand with a CN^- ligand, what mechanism should this ligand exchange follow?

What are the individual steps to this mechanism?

What is the ground state term symbol for the product?

What is the proper name of the product?

The triprotic acid H3A has ionization constants of Ka1 = 6.2× 10–3, Ka2 = 9.6× 10–9, and Ka3 = 6.3× 10–12. Calculate the following values for a 0.0790 M solution of NaH2A

A)Calculate the following values for a 0.0790 M solution of NaH2A.

H⁺=?

H₂A^-/H₃A=?

B)Calculate the following values for a 0.0790 M solution of Na2HA.

H⁺=?

HA^2-/H₂A^-=?

The water gas shift reaction involves the reaction of carbon monoxide with water vapor to form carbon dioxide and hydrogen gas:

CO(g) + H₂O(g) → CO₂(g) + H₂(g)

28.01 g CO and 9.01 g water vapor are combined in a reaction vessel. At the end of the reaction, a total pressure of 945.3 torr is found.

A.) Which gases are left at the end of the reaction?

B.) What are mole fractions of the gases left in the reaction vessel after the reaction? Clearly identify which mole fraction belongs to which gas, and report all mole fractions to three significant figures.

C.) What is the actual volume of the reaction vessel if the reaction from Question 1 occurred at 115.0^oC? Give your answer with the correct unit. Hint: you should be able to find the moles of all gases from the data given.

D.) If the volume of the reaction vessel is somehow changed to 55.3 L at constant temperature, what will the new total pressure of the gas mixture (after the reaction in Question 1) be? Give your answer to the correct number of significant figures and unit.

1. What is the maximum mass of iron that can be obtained by the reaction of 65.25 g Fe₂O₃ and 25.96 g of H₂?

Fe₂O_3(s) + 3H_2(g) -> 2 Fe_(s) + 3H₂O_(g)

2. What is the percentage yield for a reaction in which 2.50g of AgCl is obtained from 1.50g of strontium chlorida and a slight excess of silver nitrate?

SrCl_2(aq) + 2AgNO_3(aq) -> 2AgCl_(s) + Sr(NO₃)_{2 (aq)}

3. Determine the oxidation numbers for each chemical species. identify the reduced and oxidized chemical species.

2PbO_(s) + PbS_(s) -> 3Pb_(s) + SO_2(g)

Vapor Pressures of a solid and liquid ammonia near the triple point are given by: log P solid/ torr=10.00-1630 K/T log P liquid / torr=8.46-1330 K/T Calculate the ratio of the slopes of the sublimation and vapor pressure curves at the triple point.

Looking for a detailed list and explanation of the features found in 1H-NMR, 13C-NMR, and mass spectrometry of RALOXIFENE

Explain the principles of the metal ion indicators used in EDTA titration

1. Create a C10H22 aliphatic hydrocarbon that contains 2 different substituents. Name it and draw the skeletal structure.

2. Describe the intermolecular forces that cause large hydrocarbons to go from liquid to solid.

3. Draw R and S enantiomers for C4H9Br. Label R and S.

4. Describe the physical property relationship between enantiomers.

5. Explain the differences between kinetically and thermodynamically controlled reactions - draw energy curves to illuminate your explanation.

6. What are bond dissociation energies and why/how are they useful?