CHEMISTRY COMMUNITY

005162520

Has there been any updates?

005162520

Why does the slow step determine rate law ?

005162520

Why would the catalyst not be absorbed ?

005162520

Is the second step our first step and the second step or fast step?

005162520

Our TA should be the ones to reach out to us, but if not I would email them to ask how our tests would redistribute

005162520

An elementary reaction is a chemical reaction in which one or more chemical species react directly to form products in a single reaction step and with a single transition state.

005162520

Can we also determine order based on it stoichiometric coefficient ?

005162520

how would we determine if it is a positive or negative slope? Or do we just have to memorize it ?

005162520

They are given, but we have to determine which equations are zero, first, and second order.

005162520

How does Gibbs free energy relate to Thermodynamics ?

005162520

For molecularity, is there such thing beyond termolecular ?

005162520

For this class though, we mostly use the salt bridge. Are there any homework problems in which we use the porous disk ?

005162520

What do you mean by large activation energy barrier ? If it has a large activation energy barrier does that mean the reaction takes longer ?

005162520

How can we calculate n and m?

005162520

how would we show the ratio on the graph ?

005162520

so it being endothermic has nothing to do with X being a halogen ? It is just the fact to form X, energy is needed to break the bonds of X2 ?

005162520

How would we know to use Nernst equation ?

005162520

Cathode is the half reaction that is being reduced and anode is the half reaction that is being oxidized. And usually in the cell diagrams, anode is on the left and cathode is on the right.

005162520

An anode is the half reaction that is being oxidized

005162520

Is there an instance where the right is an anode and the left is a cathode? Or the rule is that it is always, are there exceptions?

005162520

For the cell diagram, does it matter where the cathode and anode are placed ?

005162520

I am pretty sure we need to know them and be able to calculate them.

005162520

So the standard enthalpy change must be given in order to use this equation?

005162520

From the periodic table, which ones are the common ones when they are the most electronegative?

005162520

Calculate the oxidation number and then notice which has gained electrons (reduction) and has lost electrons (oxidation).

005162520

For the reverse reaction, how is the electron flow ? Does it shift the oxidation and reduction sides?

005162520

I know that q is not always delta H, but it can if it is at constant pressure. But why is delta H always q?

005162520

In what conditions is it not safe to assume that the temperature is not at room temperature besides when it is given?

005162520

How is releasing free energy spontaneous ?

005162520

yes it does, it represent the change in temperature.

005162520

How are we able to determine the microstates? Is it given?

005162520

I'm diene, but I'll keep triene !

005162520

How would you do the calculations for the first law of thermodynamics ?

005162520

If it is a calorimeter, is it always an isolated system ?

005162520

Yes the workshops and step up sessions are helpful as some UAs provide worksheets and guide us and he also provides review sessions to go to to review for the midterm.

005162520

How can we calculate a reversible expansion?

005162520

What are some examples of state functions and path functions?

005162520

Why is the path taken not relevant to enthalpy?

005162520

So are we on thermodynamics?

005162520

Depending on the information given on the question, we will able to distinguish which method to use; but it is best to learn how to use all methods.

005162520

I'm confused as to why it remains constant. Why is that the case ?

005162520

Finding K in terms of pressure or concentrations are different because of the units and on a question it should be clear which one we should find in terms of what units they are looking for.

005162520

Yes, it is safe to assume unless otherwise stated on a question, which is why in class we have been finding Ka and Kb.

005162520

Usually +x is used for products and -x is used for reactants, but it does depend if it is a forward or reverse reaction.

005162520

Why isn't when you add inert gas, the concentrations and the equilibrium do not change ?

005162520

No, solids or liquids do not affect the concentrations or therefore equilibrium. Only temperature can affect the K.

005162520

Why is the concepts of Gibbs free energy relevant?

005162520

why doesn't the individual partial pressure change and the pressure of the system does change?

005162520

How does a homogenous or heterogeneous equilibrium affect a reaction?

005162520

what should we know about the ideal gas law?

005162520

If given partial pressures we calculate Kp, but if concentrations are given we calculate Kc.

005162520

How would we calculate the pkb value? Would it have to be given?

005162520

What are some examples of group one and group 1 and group 2 oxoacids?

005162520

Does chlorine get replaced by water or nitrogen from guanine base pair?

005162520

How do we know that the chlorine atoms are displaced?

005162520

How do we differentiate between tetrahedral and square planar complex if it has 4 ligands attached to the coordinate compound?

005162520

Do we have to memorize the names of common acids and bases ?

005162520

Are we expected to know how to draw a chelate and/or coordination compound?

005162520

How does EDTA remove deadly metals from the bloodstream?

005162520

Do we need to know why the chlorines bind to the guanines of the DNA strand?

005162520

You can find the coordination number by counting the numbers of atoms bound to it.

005162520

Are we expected to know and identify which H2O ligands can be replaced with in the coordinate compounds?

005162520

How would you start to name the ligands?

005162520

It would also be helpful to know and describe the biological functions of hemoglobin, myoglobin and vitamin B12.

005162520

Yes, we are expected to know this for the class and discuss well known examples of coordination compounds that are used as chemotherapy drugs.

005162520

9C is coordination compounds and week 10 homework should be Lewis acids and bases.

005162520

Why are sigma and pi bonds relevant?

005162520

How do we know that the C-H bond is stronger than C-Cl?

005162520

How do we determine when dipoles moments cancel?

005162520

So does notation matter when determining if it is rod shape and spherical?

005162520

How would you draw the resonance structure for SOCl2?

005162520

Does bond length also affect how strong the bond is?

005162520

If the polarity of a molecule cancel, do they still have dipole interactions?

005162520

How can you determine what I, II, and III are from the compound and tell the charges from each?

005162520

How do we know when a molecule has a dipole moment?

005162520

I try to tell chemistry jokes but there is no reaction.

005162520

How do we determine when an atom prefers a +/- formal charge based on their electronegativity? Are we suppose to know based on the periodic table?

005162520

How do you determine nuclear charge based on the periodic table?

005162520

Another exception include radicals in which electrons have incomplete octets because their electrons have unpaired spins such methyl radical.

005162520

In other words, if it is a neutral atom the formal charge of an atom must equal zero but if it is charged, then the formal charge must add up to the charge that was given.

005162520

Are there any expanded octet that we have to memorize? Or do we have know based on the d-orbitals?

005162520

I am confused on how you determined the chemical formula? Can someone explain how to find the chemical formula.

005162520

To add on, triple bonds have even more shared electrons therefore it is shorter than a double bond.

005162520

What did one ion say to the other?

I got my ion you.

005162520

How do you determine if it is easier to lose three electrons than to gain electrons?

005162520

I’m also confused as to why we add instead of subtracting 3.

005162520

Is it required to have the Sapling? Or is it more as a resource to have?

005162520

Why does a hamburger yield lower energy than steak?

Because it is in the ground state.

005162520

The workshops and the step-up sessions have been helpful in approaching problems and reviewing topics that I find confusing. I also go on YouTube when I haven't completely grasped the concepts, but I would strongly recommend to go to office hours for your TA as well.

005162520

What do you call a clown who's in jail?

A silicon.

005162520

I was also confused, but thank this really helps.

005162520

Although we do not have to worry about it, how can you prepare for it and become better at it?

005162520

When reading from the textbook, what should you take notes on? Or rather what should you focus on?

005162520

Quick clarification, why isn't not detectable?

005162520

"Right there on the periodic table! Do you see it??"
- "Oh my GAWWD! I can't believe it!"
"It's the element of surprise"

005162520

Water droplets ask, "Hey oil! Wanna hang out?"
Oil responds "Well I can't mix with you guys."
Water exclaims, "Hydrophobe!"

005162520

How do we know that we are suppose to convert from pm to km to m?

005162520

When using the textbook to review chemistry, how would you approach each section to fully understand the concept?

005162520

How would you convert pm to m?

005162520

You will first write the chemical equation that is given and balance it. Al(s) + Cl2(g) ---> AlCl3(s) After you balance the chemical equation, you find the moles of Al and Cl2 to help you determine the limiting reactant. To find the moles, you would convert to moles. So for Al, you would use 255g an...

Search found 101 matches