CHEMISTRY COMMUNITY

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Sorry, I didn't get your point. What should I do with the redox reaction on 2B?

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for this question, why is Au(s) used as the electrode for both sides? Isn't Au(s) a product of the redox reaction?

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What about the cathode side? the reactant is always on the left side of the products, or are reactants closer to the electrode than the product?

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Is there a specific order when there are multiple molecules present besides the electrode?
for example
Pt(s)|H2(g), H+(aq)||Fe3+(aq), Fe2+(aq)|Pt(s)
for the H2 gas and H+ on the right side of Pt for the anode, is there a specific order?

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For exercise 15.35 on the 6th edition book, can I use the half-life and multiply by 4 to find the time for the reactant to become 1/16 of the original amount in a second-order reaction?

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In this question, the equilibrium of the reaction is K=[B][C]/[A]^2 Should we consider the reaction order when calculating the equilibrium constant using rate constant? Doesn't [A]^2 means the order of reaction for A is two? Why can we directly plug in the rate constants provided regardless of the r...

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for c) in this question, why can we use the initial rate for the product G to calculate the rate constant?
quantitatively, what does the general rate law equals to?
What are the differences between initial rate, general rate law, instantaneous rate, and unique rate of reaction?

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what is the relationship between reaction quotient and reaction order? when writing the rate law for a reaction, the power of the reactants is determined by the reaction order of the reactant instead of the reactant's reaction quotient?

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When asking about the reaction rate of a reactant, should the value be positive or negative?
I know that for products, more are forming, so the reaction rate for the individual product is positive.

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In b) why is the reaction endothermic? Is it because a halogen is stable in the form X2, so 2X is an unstable form thus has higher energy?

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In this question, how can I calculate Kc with gas? How can I know the concentration of gases?

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What are the factors that can influence the value of the equilibrium constant? Why is d) in the question true?

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How can I use the heat of combustion to calculate the reaction enthalpy?

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How do I know the strength of reducing power and oxidizing power using standard reduction potential?

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What effect does temperature have on reaction constant k? in many homework problems, I see there are specific values of k relating with different temperature.

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How can I find the skeletal reaction for the redox reaction? After finding one of the skeletal reaction, do I just take whatever is left from the overall reaction for the other skeletal reaction?

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Is it true that the redox reaction always involves oxygen? From the homework problems, there is always oxygen present.

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can someone help me out with this question? how can I find the skeletal reaction when the product is both produced by the oxidizing agent and the reducing agent?

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Can somebody explain how to calculate reaction enthalpy using enthalpy of combustion? Why is the enthalpy of the reaction negative?

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when volume and temperature change at the same time, how can I calculate the overall change of entropy

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How can I calculate degeneracy (w), how is the volume related to degeneracy?

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I couldn't find links to discussion about Redox reactions, so here I am, posting a redox reaction question under the general science board.
Can someone help me out with the question shown in the picture, what is the relationship between losing and gaining electrons with losing and gain H+ (H atom)?

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what are protonation and deprotonation? How should I calculate the percentage of protonation and percentage of deprotonation?

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What are the significance of Ka Kb and pKa pKb, why do we calculate them? What is the relationship between pH pOH and pKa pKb?

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Is the value of the reaction quotient the same for gas when calculating it by gas concentration and when calculating it by partial pressure?

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How do I explain the change in equilibrium with reaction quotient (Q) after changing the volume?

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1. If the reaction includes both aqueous solutions and gases, how can we calculate the equilibrium constant?
2. Under what condition can the concentration(partial pressure) of water be included in the calculation of equilibrium constant?

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however, on the practice midterm, question (d) on the attachment, how is the answer 4 then?

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Is it necessary for electronegative atoms like Oxygen, Nitrogen, Florine to bond to hydron for them to form hydrogen bonds with other molecules that have N,O,F bonded to hydrogen?

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When there are a neutral and a charged ligand in the coordination complex, should the neutral ligand be in front of the charged ligand regardless of the alphabetical order? relating to question 31(d) on the 6th edition book (page762)

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What should be the unit of the concentration when calculating the pH of the solution?

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For Question8 in 2011 midterm. What is the hybridization of the Nitrogen atom in CH3CN? What about the lone pair on N? Are there different hybridizations for the 3 bonds between the central Carbon atom and the Nitrogen atom? How should I represent the hybridizations in the final if there are questio...

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The syllabus says that we need to identify and draw structures of coordinate compounds. How do I know whether the shape of the molecule is tetrahedron or square-planar when the coordination number is 4.

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we have talked a lot about coordination, but why do we care? what is the significance of coordinates?

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For question 6.5.c in the 6th edition, why does CHI3 has greater melting point than CHF3. I thought that Fluorine has greater electronegative thus causing the greater dipole moment.

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so the presence of a double bond and a bond with another carbon doesn't affect the other bond angles?

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I'm not sure how the bond angles in Ethylene is affected by different atoms. how are the bond angles of H-C-H different from that of H-C-C? and why?

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will double and triple bonds in a muti-bond structure affect the bond angle?

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I was informed that formal charges are a component of the Lewis structure, do I have to write the formal charges for each of the atoms in the molecule when writing a Lewis structure.

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for question 5.c on test2:
how exactly should I answer: what is the degeneracy of a 4p orbital?

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what is the correct answer for question 4.b on test2:
describe the nature of the energy levels in the Ne atoms

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How can I interpret the meaning of degenerate? How should I answer the question on test2 that asks about the degeneracy of a 4p orbital?

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Why is a true and d false?

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Does the down spin represent a higher energy? Is it okay if I put down arrows instead of arrows pointing up? How do I tell if the atom is in an excited state by looking at the electron configuration?

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How can I tell if a wavelength is detectable? Is there a limit for current technologies?

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I'm confused, if the number of photons only influence the intensity of the light instead of the energy of the light, then why can the book ask questions like the photo attachment?

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If the number of particles determines the amount of energy given off, then the assumptions in the photoelectric effect example would be wrong, since we can manipulate the number of photons to excite electrons no matter what the frequency is. How is this possible?

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When excited electrons fall back from the excited state to ground state, what determines the energy besides frequency and wavelength? Will the number of electrons falling back affects the amount of energy given off?

To see a specific question: go to exercise 1.25 in the 6th edition book.

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what if I want to round 14.996 to the nearest hundredth? what result will I get?

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One of the questions in the video module about photoelectric effect asks about the new equation that was given rise by the photoelectric experiment, which equation should I put?

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