CHEMISTRY COMMUNITY

RahilVaknalliDis3A

An oxyacid is an acid containing hydrogen, n number of oxygen atoms and a halogen. We need to understand how the strength of the acid varies with respect to the number of oxygen atoms and electronegativity of the halogen. If there are more oxygen atoms present, the acid is stronger since the resulti...

RahilVaknalliDis3A

The solutions manual mentioned that Boric acid is a weak acid because it does not have a conjugate system to delocalize the electrons on the oxygen to weaken the O-H bond. What does this mean?

RahilVaknalliDis3A

In a solution containing multiple weak acids, if Acid A is stronger than Acid B, does it imply that Acid B is acting as a base? Similarly. if you add a weak base such as ammonia - how do you determine its behaviour if its solvent is a weak acid.

RahilVaknalliDis3A

Why can formic acid better stabilize the negative charge? What does it mean for the methyl group to be electron donating?

RahilVaknalliDis3A

Why does the number of O atoms in an oxyacid affect its strength? Why is acetic acid weaker than formic acid?

RahilVaknalliDis3A

I think this implies that increasing the concentration of the reactants would push the formation of more product, hence increasing the concentration of the product. But this still makes sure that the ratio of the concentration of products/ concentration of reactants remains the same, therefore the v...

RahilVaknalliDis3A

There are different cases when the dipole moments cancel out. You need to look at the VSEPR structure and the dipole moment of the individual bonds. If one of the individual bonds is more polar than another bond, there will be a net dipole moment, making the entire molecule polar. If all the bonds i...

RahilVaknalliDis3A

Why is there more products formed when Q is less than K? How does Gibbs free energy fit into this equation? I thought that there was a linear relationship between K and Q.

RahilVaknalliDis3A

What is the difference between a resonance structure and an isomer?

RahilVaknalliDis3A

Based on the Lewis structure of a molecule, how do you differentiate between those that are radicals and those that have an incomplete octet?

RahilVaknalliDis3A

What does it mean when we say that an electron can penetrate through the inner shells? The book mentions how the s electron can penetrate through the inner shells. Is this valid for all elements?

RahilVaknalliDis3A

The nucleus of many-electron atoms has a higher charge than the hydrogen nucleus and this causes it to attract electrons more strongly. The repulsion of electrons opposes nuclear attraction and raises the energy of the orbitals. The hydrogen atom has no electron electron repulsions.

RahilVaknalliDis3A

Is the intensity of the radiation the rate at which photons arrive and hit the metal or is it the number of photons present as a result of the amplitude of light?

RahilVaknalliDis3A

Part c wants you to imagine that the total energy = Work function since it's asking for the longest wavelength radiation which will have photons with the least amount of energy. The problem uses a combination of both the hv = Work function and the c= Frequency x Wavelength to solve for the wavelengt...

RahilVaknalliDis3A

I was unsure which constants need to be memorized, other than Planck's constant and the Rydberg formula. Do we also need to know the conversion of EV to Joules?

RahilVaknalliDis3A

You are on the right track. I believe there is a simple calculation error since you are multiplying the number of moles of water molecules with the wrong number. Avogradro's constant is 6.022 x 10²³ and not 6.0022 x 10²³

RahilVaknalliDis3A

You need to prepare 510 g of an aqueous solution containing 5.45% of KNO₃ by mass. Describe how you would prepare the solution and what mass of each component would you use.

Is there a specific reaction we need to know about? I managed to calculate the mass of water and salt using the information.

CHEMISTRY COMMUNITY

Search found 17 matches

Re: Oxoacids

12.119

Solutions containing Multiple Weak acids

Re: Strength of Acids and Bases [ENDORSED]

Strength of Acids and Bases [ENDORSED]

Re: 11.1

Re: Dipole moments

Relation between K and Q

Resonance Structures and Isomers

Incomplete Octet Vs Radical [ENDORSED]

Electron Subshells [ENDORSED]

Re: Orbital Energies for Many-Electron Atoms

Photoelectric Effect Doubt [ENDORSED]

Re: Example 1.5 Analyzing the Photoelectric Effect

Constants that need to be memorized

Re: E 29 part c

G7 - Homework Problem