CHEMISTRY COMMUNITY

Alexander_Chang_1I

If the states of matter in either the cathode or the anode are all (aq), (l), or (g), then we add a solid electrode (Pt(s) is a common one to remember, but there are others).

Alexander_Chang_1I

I would assume that if something like this appeared on the final, it would look similar to the example done in class. The three variables are standard G of both conformations, and K. A problem like this would either have us calculate the relative G of one conformation, or K, and would have to give u...

Alexander_Chang_1I

If you are going off of the constants on the periodic table that comes with the course reader, the constant for Faraday's constant is 10x larger than it should be. This may be the cause of your confusion.

Alexander_Chang_1I

The problem states that the reaction is irreversible. The equation you are thinking of is only used when the reaction is reversible and isothermal.

Alexander_Chang_1I

Yes, we multiply by stoichiometric constants for everything except for Ecell.

Alexander_Chang_1I

Why is the name 2-isopropyl-1, 1-dimethylcyclopentane? Is there some sort of rule for cycloalkanes that states propyl should come before methyl in the name?

Alexander_Chang_1I

a) The equation relating the equilibrium constant to the rate constants is K=k/k rev . Therefore if K is large, that means k is large relative to k rev . b) Using the same formula, we know that K=k/k rev . Therefore k=k rev only if K is 1, and this is a very rare occurrence. You can also remember th...

Alexander_Chang_1I

I think that reversible reactions are meant to be more of a theoretical concept, but your second question seems to be on the right track as I'm assuming that is how energy is transferred at the microscopic level.

Alexander_Chang_1I

The question states that the standard enthalpy of formation is 358.8kJ, which means that to use up one mol of S8 358.8kJ/mol are required. That's where the solutions manual get's kJ/mol from.

Alexander_Chang_1I

Almost. You have to specify the what "the temperature" refers to. Endothermic means that a system gains energy, and exothermic means it loses energy. In this case, temperature will follow the flow of energy: in an endothermic reaction the system increases in temperature and its surrounding...

Alexander_Chang_1I

H20 is a pure liquid and is not included in the equilibrium equation.

Alexander_Chang_1I

This question is basically asking what the pH at the stoichiometric point is; to reach the stoichiometric point of a titration one must add enough moles of base to cancel out all the starting moles of acid, changing it to its conjugate base (or add acid to base in the opposite titration). In this ca...

Alexander_Chang_1I

The hydronium and hydroxide ions do move around, but it is actually the transferring of protons (H+), resulting in the creation of new hydronium and hydroxide ions that gives the appearance of swift movement.

Alexander_Chang_1I

Molecular orbitals form when electrons from atomic orbitals come together into regions along the molecule. Bonding orbitals have a lower energy level, and are therefore located lower in the MO (molecular orbital) diagram, while anti-bonding orbitals have a higher energy level and will be located hig...

Alexander_Chang_1I

Nitrogen ends up being the central atom because it is the least electronegative/has the lowest ionization energy. From there you simply juggle single/triple bonds, comparing the formal charges and ensuring that the compound obeys the octet rule. The structures with the most stable formal charges are...

Alexander_Chang_1I

Yes, valence electrons are the same as electrons in the outermost shell.

Alexander_Chang_1I

Make sure that all the units are correct as well by changing velocity from m/s into cm/s

Alexander_Chang_1I

Basically you first have to determine which product is the limiting reactant by converting both O and P to moles and comparing the ratio (which is 4 Oxygen:10 Phosphorous), use the limiting reactant to determine the moles of P4O6 created in the first reaction, and use that to determine the moles of ...

CHEMISTRY COMMUNITY

Search found 18 matches

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