Homework Help for Chemistry

Obtain expressions for each of the following standardderivatives, for n moles of a monatomic ideal gas (express yourresults in terms of n, T, P, and/or R).

what is the mechanism for reaction of benzaldehyde with sulfuricacid in a solubility test?

Use the average bond energies in the text to estimate theenthalpy

changes (in kJ/mol) of the following reactions.
N2(g) + O2(g) > 2 NO(g)
C(s) + CO2(g) > 2 CO(g)

Use the average bond energies in the text to estimate theenthalpy

changes (in kJ/mol) of the following reactions.
N2(g) + O2(g) > 2 NO(g)
C(s) + CO2(g) > 2 CO(g)

The reaction of H2 with F2 produces HF with 'delta'H = -269kJ/mol of HF.
If the H-H and H-F bond energies are 432 and 565kJ/mol, respectively, what is the F-F bond energy (inkJ/mol)?

Thanks

[asked with an image]

Analysis the IR n MS. What compound is that?????

I need some help on this question. I know that three arecorrect. I think that options two and three are correct, but Icannot find the third. Please help.

I need some help on this question. I know that three arecorrect. I think that options two and three are correct, but Icannot find the third. Please help.

Can't seem to get the right order on this one.

1. The most useful way torationalize the strengths of uncharged acids is to compare thestabilities of the conjugate bases (negatively charged) formed byeach acid. The strongest acid will generate the most stableconjugate base, while the weakest acid will lead to formation ofthe least stable conjugate base. (Or you can say that the strongestacid yields the weakest conjugate base, and the weakest acid yieldsthe strongest conjugate base.) Use this strategy to explain thefollowing pKa values.

a. Alcohols are strongeracids than amines, and amines are stronger acids than alkanes.Explain. (Three examples are shown below.)

b. Acetic acid,CH3CO2H, is astronger acid than ethanol, CH3CH2OH (pKa = 5 and 16,respectively). Why?

c. Phenol is a stronger acidthan cyclohexanol. Explain.

Having alot of trouble with these.

2. Quinoline is the bicyclicstructure shown below. Its conjugate acid has a pKa of 4.90.

I have all parts correct but I am not sure exactly what it isasking for in the last box.