CHEMISTRY COMMUNITY

Swati_Sharma_2D

Hi,

The other difference is if you look what is being reacted. If a compound is being reacted with an electrophile, then it is electrophilic addition. If a compound is being reacted with a nucleophile, it is an SN2 reaction.

Swati_Sharma_2D

The equilibrium constant, K eq is the ratio of the equilibrium concentrations of the products over the equilibrium concentrations of the reactants. This is if you are given a chemical equation and the concentrations could be in molars or sometimes in partial pressures. The rate constant, k, is used ...

Swati_Sharma_2D

What is the molecule CH2O called? Seawater!

Swati_Sharma_2D

Are the cis and trans labels only used for alkenes or are they also required when naming alkanes and alkynes?

Thanks!

Swati_Sharma_2D

Hi,

I would say that one of the main reasons OH- is more nucleophilic is the fact that it has an overall negative charge, which signifies that it can more easily attract positively charged atoms than water which does not have an overall negative charge.

Swati_Sharma_2D

Hi,

I'm not sure why it is like that in the course reader, but if you follow the actual formula where the temperature part is written as (1/T1 - 1/T2) you will get the same answer that is in the course reader.

Swati_Sharma_2D

Hi, An inert electrode (usually Pt) is used when there is a gas/ion electrode reaction. When you separate the main equation into the cathode and anode reactions, you have to see if there are only gases and ions present. If that is the case, then an inert electrode has to be used. If there is a solid...

Swati_Sharma_2D

Do you have any sodium hypobromite?

NaBrO.

Swati_Sharma_2D

Hi,

For part b you should use the W = -nRTln(v2/V1).
You first have to use the ideal gas law PV = nRT to find the number of moles and then you can use the above formula. That should get you the correct answer.

Swati_Sharma_2D

Hi, In order to solve this problem, you can use the fact that F (force) = P (pressure) x A (area) and that W (work) = F (force) x D (distance). Combining these two equations, we get W = (A x P) x D because we substituted P x A for F. The pressure is given in the problem and the area A can be calcula...

Swati_Sharma_2D

What do you do with a sick chemist?
If you can't helium, and you can't curium, then you might as well barium.

Swati_Sharma_2D

Hi,

Polyprotic acids (acids that have more than one proton to donate) will have Ka2 values. The Ka2 value describes the constant that you should use when the polyprotic acid is losing its second proton (H+).

Swati_Sharma_2D

Swati_Sharma_2D

Can someone explain why the pi 2p energy level has less energy than the sigma 2p orbital when Z <8 and why the pi 2p energy level has more energy when Z>8? I understand that that is the case, but I don't understand why.

Swati_Sharma_2D

This is because they are exceptions and do not follow the normal electron configuration rules (their d orbital is completely filled with only one electron in the s orbital). There are only a couple of elements that have exceptions, and Cu, Au, and Ag are three of them. It would not be correct to say...

Swati_Sharma_2D

Hi, I believe it depends on the electronegativity of the elements in the compound you are trying to make a lewis structure for; if radon or krypton are the least electronegative, I imagine they could go in the center although I don't believe this is very common as it is not something I have seen bef...

Swati_Sharma_2D

How often do I make chemistry jokes?
Periodically.

Swati_Sharma_2D

Hi, Since this is a Balmer series, we know that that n1 = 2, so the fifth line must be n2 = 7. You then have the use the Rydberg equation: v = Rydberg's constant x ((1/(2^2) - 1/(7^2)) After solving for this frequency (v), use c = wavelength x frequency. Plug in the frequency you just solved for and...

Swati_Sharma_2D

Generally, Avogadro's number is used when a problems asks for how many atoms/molecules/formula units of a certain element or substance there are. In that case, you can use stoichiometry to find the number of units because there are 6.022 x 10^23 units per mole. For example, say you were given a prob...

Swati_Sharma_2D

A neutron walks into a bar and asks, "How much for a drink?"
The bartender replies, "For you, no charge."
Haha

Swati_Sharma_2D

In most chemistry problems I've encountered in my high school chemistry courses, most answers were in grams. It might be easier to report answers in grams especially when a problem requires using dimensional analysis using the molar mass from the periodic table which is given in grams/mole.

CHEMISTRY COMMUNITY

Search found 21 matches

Re: Electrophilic addition and Sn2

Re: Difference between equilibrium constant and rate constant

Re: Post All Chemistry Jokes Here

cis and trans

Re: Nucleophile strength

Re: 15.61

Re: Inert Conductors

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Re: HW Ch. 8 #27

Re: Homework chapter 8 #3 part a [ENDORSED]

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Energy Level differences depending on Z

Re: Group 11 Metals Quantum Numbers

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Re: Homework Problem 1.57.

Re: What exactly is Avogrado's Number? [ENDORSED]

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