CHEMISTRY COMMUNITY

Kalsuda Lapborisuth 1B

I believe oxoacid is simply a type of strong acid because it is an acid with has at least one hydrogen atom bonded to oxygen

Kalsuda Lapborisuth 1B

Another way to identify strong acid is to see the difference in electronegativity. If there is more difference in electronegativity, it will weaken the bond and make the acid stronger.

Kalsuda Lapborisuth 1B

I am not quite sure what you meant by your question but I think you still need to do calculations because the number of moles of H+ and OH- in the solution added by both the one base and one acid does not necessarily have to be equal.

Kalsuda Lapborisuth 1B

I believe it simply says the concept applies to all types of molecue

Kalsuda Lapborisuth 1B

Electrons are more likely going to be found in the bonding region. Logically, the amount of electron density region would be equal to the number of hybrid orbital.

Kalsuda Lapborisuth 1B

I personally use the same method so I believe that they are correct. However, when I implement them I usually draw it out for clarity. Hope that helps!

Kalsuda Lapborisuth 1B

Using the criteria given by the reply above, if you are not sure during the test you can draw out many structures to compare the formal charge for the sake of clarity also. Hope that also helps!

Kalsuda Lapborisuth 1B

This might be slightly out of topic but why is the fact that radical is highly reactive makes radicals harmful?

Kalsuda Lapborisuth 1B

My TA mentioned that atoms from group 3 doesn't need to have an octet (to minimize formal charges). I am curious as to how the atoms from below period 3 in group 3 would behave? Would it violate the octet rule in the similar fashion to Al and B or in the similar fashion to P and S in the same period...

Kalsuda Lapborisuth 1B

Dr.Lavelle mentioned in class that you don't have to show (with Lewis structures) which electrons were lost/gained and simply put the charge outside the brackets.

Kalsuda Lapborisuth 1B

Is there a guideline to an octet rule violation?

Kalsuda Lapborisuth 1B

I came across this an old course reader, saying "The lower the individual values of the formal charges the more stable the structure." Why is this the case?

Kalsuda Lapborisuth 1B

I believe it is also due to the increase in electronegativity across the periodic table, which is drawing the electrons inwards.

Kalsuda Lapborisuth 1B

In the way of filling orbitals, in accordance to the "half-shell rule", it is more stable to have one electron in each box than to have ,say, 4 in 3 boxes for p orbital. As a result, it takes less energy to take away an electron from O.

Kalsuda Lapborisuth 1B

Is it also correct to say the same for 5s and 4d?

Kalsuda Lapborisuth 1B

I would like to confirm whether on the test we can use shorthand with the closest Nobel gas unless it was specified?

Kalsuda Lapborisuth 1B

This might be a slightly weird/off topic question but are we assuming that an atom has a spherical shape when we are finding an atomic radius? If so, why?

Kalsuda Lapborisuth 1B

The question asks "Which of the following subshells cannot exist in an atom: (a) 2d; (b) 4d; (c) 4g; (d) 6f?". I understand that a and c cannot exist but I am not sure about the explanation as to why b and d can exist.

Kalsuda Lapborisuth 1B

I am confused with the signs when I use Rydberg equation and conservation of energy. Could someone kindly clarify this please?

Kalsuda Lapborisuth 1B

But if light has momentum as you said, wouldn't De Brogile's wave equation be applicable to photon also? I would like further clarification
on whether lambda=h/p applies to photon particles or not.

Kalsuda Lapborisuth 1B

I'm not sure how to approach this question. "What is the minimum uncertainty in the position of a hydrogen atom in a particle accelerator given that its speed is known to within +- 5.0 m s^-1?"

Kalsuda Lapborisuth 1B

Should we always answer in scientific notation? or simply maintaining sig figs is enough?

Kalsuda Lapborisuth 1B

While I know that guess and check is usually the typical method to balancing equation, are there tips on points I should look out for or things I should do first to make balancing complex equation faster?

Kalsuda Lapborisuth 1B

I'm not totally sure which questions are this week's homework?

Kalsuda Lapborisuth 1B

Because when KCl and NaCl dissolves in water, they become K+and Cl- and Na+ and Cl- respectively, you can approach this problem by simply adding the moles of KCl and NaCl together to find the total molar concentration of Cl- in 100.0mL solution.

Kalsuda Lapborisuth 1B

I believe catalysts are usually noted above the arrows in chemical equations and not included in the reactants or products.

Kalsuda Lapborisuth 1B

I understand the material so far but I wonder if there are situations/problems where the formula MiVi = MfVf cannot be used?

CHEMISTRY COMMUNITY

Search found 27 matches

Re: Oxoacids

Re: strong acid/base?

Re: acid plus base

Re: Clarification

Re: Hybrid orbitals

Re: Atomic orbitals vs hybrid orbitals

Re: Stability

Re: Radicals [ENDORSED]

Octet exceptions

Re: Cations and Anions

Octet rule

Lower formal charges

Re: Atomic Radius [ENDORSED]

Re: Unicorn practice test 6d.

Re: 3d before 4s

Short hand for test

Atomic radius

Explanation to the answer of the question 2.31

Negative signs

Re: equations that apply to light only/everything else but light

Question 1.44 from the textbook

Scientific notation [ENDORSED]

Fastest way to balance chemical equation

Homework? [ENDORSED]

Re: G.23 from HW [ENDORSED]

Re: Catalysts [ENDORSED]

Molarity formula