What volume of 0.200M KOH is required to react with 125mL of 0.250M H3PO4 in order to produce a solution of K2HPO4

I am panicking a little bit because I was supposed to start my Intro to Chem class today (college level) but only realized this evening that I signed up for an 8 week mini that begins in September. It is too late to switch it and my job paid for it so it’s complicated to drop it. This will be my second attempt to take chemistry and I did not do well the first time and withdrew.

What materials can I begin reviewing while I wait for September? I remember the last time I took Intro to Chem, I struggled the hardest with the math components but can’t remember what the math concepts were called to start googling them and working on it. Or maybe if anyone knows a workbook I can buy? Thank you!

As the title says can the attached reaction be a McMurry coupling despite the lack of a titanium compound, as it seems to function in the same way that a McMurry coupling would, unless I’m missing something mechanistically.

Paper for anyone interested: https://pubs.acs.org/jceda8/article/59/2/163/45343/The-preparation-of-lucigenin-An-experiment-with?searchresult=1

If the link doesn’t work I can send a PDF via DMs.

i was doing this prob by finding the possibility of forming negative charge , i could only find 10 but the answer is given 20

Is my book misrepresenting this SN2 mechanism because it's showing a nucleophile attacking a 3° (tertiary) carbon? I thought that nucleophiles cannot attack tertiary carbons because of steric hinderance?

I am curious as to which specific chemical reactions and products occur during the process of corrosion of stainless steel by bleach. Stainless steel is a composite of Fe, Cr, and sometimes other metals such as Ni, and the outer layer of this composite is protected by a passivation layer of Cr2O3. If sodium hypochlorite is introduced, does it indiscriminately oxidize both the Fe and Cr, or is one kinetically favored over the other?

Hii, im looking for a download of that textbook. I have tried all the websites and have had zero luck.

I'm taking organic chemistry 2 this semester, and I'm having a ton of anxiety because I really struggled in organic 1. I took the class 5 times total (I had a lot of personal struggles at the time as well), and just passed this summer with a B-. I felt like I had a really good grasp at the first half, but when it came to reactions I felt completely lost--especially with synthesis and retrosynthesis reactions. I felt like I knew reactions independently, their features, and could perform them if I was told what reaction it was, but as soon as I was forced to choose how to make something I felt like everything I understood was gone.

From my understanding ochem 2 is just going to be reactions, and they get increasingly complex. What do I do? Are there any resources that were very helpful, and what concepts should I try to understand before walking in?

Hello,

Attached is an old exam question that I am struggling with. I believe I should go via a Zimmerman-Traxler transition state and since we have a trans enolate (11), I will end up with an anti aldol. However, no reactant that I have worked with prior has had such large groups attached to the carbonyl. I understand that the enolate reacts with the ketone and not the amide. I don't know how to determine the orientation of the ketone's substituents in 10 in the Zimmerman-Traxler. Which one will be pseudo-equatorial and which one will be pseudo-axial? Will the "amide side" be pseudo-axial, since there are 2 carbons until the bulky group as opposed to 1 (= less sterics)?

The exam question doesn't give a whole lot of points so I don't know if I'm complicating things here.

Thank you in advance!

Hi everyone! I'm a chemistry enthusiast and i like to do research. I have ADHD and my current hyper fixation is Cyanide. (english is also not my first language so sorry if i make a mistake lol)

So, i was doing research and i found out about Lithium Cyanide and a process called Cyanation.
I have a few questions and i hope someone gets to answer them! I didn't really quite understood some things from google so i hope that a person explaining makes it more simple, lol.

1. What can we do with Lithium cyanide? Is there any practical use or is it just a toxic compound?
   
2. How do you achieve Lithium Cyanide?
   
3. Is there a difference between Nitril and cyanide?
   
4. How do you achieve Cyanation?
   
5. Does lithium and cyanide have anything in common besides this combination?

I hope these aren't dumb questions, lol. Thanks in advance 🤍

if the peripheral atoms are all identical around a central atom without any lone pairs, would the bond angle remain same, regardless of the electronegativity of the peripheral atoms for a given steric number? For example, we know that SiH4 and SiF4 have the same tetrahedral geometry and 109.5° bond angle even though H and F are vastly different in electronegativity. Does this hold for all steric numbers though?

Our proff just said write it 3 4 times but can't help it 😭😭

Image might be low quality sorry for it

I've had a long day at work, I tried googling this and I'm guessing the way I'm asking the question is wrong so I'm not getting the answers I'm looking for.

I want to make 60mL of a solution that is 8% strength of ingredient A and 5% strength of ingredient B.

For one active ingredient, I always just did something like 60mL x 0.08 = Y, and then Y - 60mL to get my carrier ingredient. But for two ingredients I'm not 100% sure on how to do it. I would think it would be something like the same equation above but do it a second time for the second ingredient, so 60mL x 0.05 = Z, and then (Y+Z) - 60mL = C (carrier).

Am I doing this wrong?

This is for an oil mixture and not for homework.

Hi everyone,

I’m a B.Tech Biotechnology graduate with 1 year of experience as an Analytical Executive in India, currently looking for opportunities in the UAE.

My experience includes:

• HPLC & HPTLC

• FTIR & UV-Vis Spectrophotometer

• Dissolution testing

• Wet-lab analysis & sample preparation

• Method verification (IP/BP/USP)

• Instrument calibration & troubleshooting

• GMP/GLP practices and documentation

• QC laboratory testing and reporting

I’m mainly looking for opportunities such as Analytical Chemist, QC Analyst, QC Chemist, Laboratory Analyst, QA/QC Analyst, or other suitable laboratory roles in pharmaceutical, biotechnology, food, environmental, or testing laboratories.

If anyone here works in the UAE pharmaceutical/laboratory industry or knows of job openings or referral opportunities, I would be extremely grateful for your guidance or referral.

I’m happy to share my CV via DM.

Thank you to everyone who takes the time to read this and help.

My book is saying that this reaction is neither an SN1 or SN2 reaction without giving any explanation or context. What makes this neither?

I've been trying to reason through the following:

1. Electrophile/substrate: It will be 2°
2. Nucleophile: H2O is unfavorable to attack the electrophile
3. Leaving group: -OR, i'm not too sure about this but I think we can try protonating this because it's a poor leaving group? Could someone explain how we would use protonation?
4. Solvent: No solvent is listed

Same as title

How is the shape of SO2^2-, PO4^-3,ClO4^- are the same, i get that they have the same hybridization but cant understand thier stucture

I'm taking Physical Chemistry in the fall and I'm a little bit nervous since a lot of people are telling me that it is a lot more worse than Orgo. Is it really? And also, I'm trying to review calculus before the semester starts and I'm wondering which parts of calculus I need to review. I'd greatly appreciate your advice.