Inorganic Chemistry Answers

State hund's rule and give justification for it.

a) A gaseous molecule is exposed to electromagnetic radiation which changes its vibrational energy. Would any other type of energy also changes with it. If yes, name it.
b) Why di group frequencies of various functional groups not change much from molecule to molecule?

Calculate the de broglie wavelength associated with an electron moving with velocity of 1/10 th the velocity of the light

Solve for the hydronium ion concentration of a solution with a pOH of 6.43

At what pH will phenobarbital begin to separate from its solution? Phenobarbital is a weak acid.
Initial conc. 0.0393M
Ionized conc. 0.0043M
Ka 3.9x10^-8

ROUND OFF TO 2 DECIMAL PLACES.

A weakly acidic investigational drug is subjected to pharmacokinetic study. The researchers want to know the site of administration wherein the drug will be readily absorbable. Ka of drug 1.26x10^-5
Will the drug be absorbed enterally or parenterally? If your answer is parenteral, will it be IV or IM? If your answer is enteral, will the target site be the stomach or small intestine?
Write your answer in this manner: parenteral-IV ; parenteral-IM ; enteral-stomach ; enteral-small intestine

solve for the pH of a solution containing 7.5g of ammonium hydroxide in 1.5L soln. Kb of ammonium hydroxide is 4.8x10^-11

3. A closed system initially containing 1.000 × 10-3 M H2 and 2.000 × 10-3 M I2 at 448℃ is allowed to reach equilibrium. At equilibrium, the HI concentration is 1.87 × 10-3 M. Given that the reaction equation is H2(g) + I2(g) ↔ 2 HI(g), find:
a. Equilibrium concentrations of the two reactants
b. Kc of the reaction taking place.

2. After a mixture of hydrogen and nitrogen gases in a reaction vessel is allowed to attain equilibrium at 472℃, it is found to contain 7.38 atm H2, 2.46 atm N2, and 0.166 atm NH3. From these data,
a. Write the chemical equation of the reaction.
b. Calculate the equilibrium constant Kp for this reaction.