CHEMISTRY COMMUNITY

Salma Sudarmadji 2I

For the equation E= E -RT/nF lnQ and E=E- 0.05916/n logQ, I get different answers. Is one preferred over the other? Or will both answers be accepted?

Salma Sudarmadji 2I

Hi,
What is the general purpose of the pre equilibrium approach? When do we use it?

Thanks

Salma Sudarmadji 2I

Hi, so is electrophilic addition always 2 steps and SN2 reactions always 1 step?

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Salma Sudarmadji 2I

Hi,
Is the rate determining step (which is the slow step) the same as rate limiting step?

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Salma Sudarmadji 2I

When do we know to use the pre equilibrium approach?
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Salma Sudarmadji 2I

What is an easy way to remember how to determine if a reaction is first order or second order?
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Salma Sudarmadji 2I

In a complex diagram of a reaction, how can you tell which bonds are broken and which are formed?

Salma Sudarmadji 2I

Why are chemists great for solving problems?
A: They have all the solutions!

Salma Sudarmadji 2I

In the course reader it says that ln (K2/k1)=delta H/RT2 + delta H/Rt1 and that we can assume that delta S is constant. Why can we assume that delta S is constant?

Salma Sudarmadji 2I

From a problem, how can you tell whether to use q=mc delta t or q=nc delta t?

Thanks

Salma Sudarmadji 2I

In the course reader it says that when finding standard enthalpy, we have to make sure everything is in standard state. What does it mean by "standard state"? Can you give an example?
Thanks

Salma Sudarmadji 2I

In a molecular formula problem, we are given the mg of each atom, and in the answers they do not convert it to g but leave it as mg, therefore using mmol. Is there a difference if we converted the mg to g and mmol to mol? Which is preferred?

Salma Sudarmadji 2I

Why does change in temperature cause K value to change but not change in pressure or volume?

Salma Sudarmadji 2I

If I were to do a MO diagram for NO +2, would I take away 1 e- from O and 1 e- from N or would I take away 2 e- from just O?

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Salma Sudarmadji 2I

Is there a difference between (pi,2p)^4 and (pi,2px)^2(pi,2py)^2?

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Salma Sudarmadji 2I

Is the only way to figure out if a material is paramagnetic or diamagnetic is to draw out the molecular orbital energy diagrams?

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Salma Sudarmadji 2I

When drawing the "best" lewis structure, do the most electronegative atom always receive the charge in ionic bonds?

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Salma Sudarmadji 2I

Is there a way to figure out the electro negativity of atoms? Or would the electro negativity values be given?

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Salma Sudarmadji 2I

When light is emitted, does it always mean that the change in energy is going to be negative?

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Salma Sudarmadji 2I

6.40 g of a compound was burned in the air and produced 8.80 g CO2 and 7.20 g H2O. Find the empirical formula of the compound. The answer says it is CH4O, but I did all the steps and checked multiple times but I keep getting CH2O. What did I do wrong? https://mail.google.com/mail/u/0/?ui=2&ik=94...

Salma Sudarmadji 2I

Hi, so I just want to make sure I am correct, the general steps for limit reactant calculations is: 1. Balance Equation 2. Calculate molar mass of each reactant 3. Calculate # of moles of each 4. Compare how much of a reactant is needed according to the balanced reaction. Please comment if I missed ...

CHEMISTRY COMMUNITY

Search found 21 matches

cell potential equations

pre equilibrium

number of steps [ENDORSED]

rate determining and rate limiting step [ENDORSED]

pre equilibrium approach

First order, second order reactions [ENDORSED]

Bond Enthalpy w/ Diagram

Re: Post All Chemistry Jokes Here

Vant Hoff Equation

Q [ENDORSED]

standard enthalpy

mmol and mol

Change of K [ENDORSED]

NO +2 Orbital

e- configuration with pi & sigma bonds

Paramagnetic vs Diamagnetic

"best" lewis structure

Determining electro negativity

Emit Light

Workbook: Quiz 1 2015 #5 Find empirical formula [ENDORSED]

Steps for Limiting Reactant Problems