Analytical chemistry Puns

So next year, I will be taking the instrumental analysis (analytical chemistry) and physical chemistry sequences both with labs at the same time. A little bit about my previous coursework, I did really well in ochem 1 and 2, inorganic chem was difficult for me, and I would consider myself generally pretty strong in math subjects. Although, I did struggle a little in calculus 2. I am not the best at physics and I struggled a lot in physics 2 but I do understand the basic concepts.

Do you guys think both of these sequences at the same time is doable? It is going to be my last year of undergrad so those are going to be my main classes along with maybe one or two electives not related to Chemistry. Therefore, I can heavily focus on those classes. Also if you have any advice to be successful in both courses that would be greatly appreciated!

Has anyone successfully made a career transfer from clinical chemistry into analytical chemistry without any further schooling? I currently work with GC/MS and LC/MS and would like to take this experience out of the medical field, but seem to be of no interest to potential employers. Any advice?

Dear fellow Reddit biochemists,

I hope this post finds you well.

In my country, the jobs available for students who complete their degree in chemistry/biochemistry are mostly related to analytical chemistry. I believe this to be the case in many countries, specially those countries where available capital to fund R&D is smaller.

In most job applications the job requirements usually include the techniques one is expected to be familiar with, mostly GC, HPLC, etc. But, to succeed in this field, what other technical skills and knowledge are useful? Sample prep techniques? Chemometrics?

I would be glad if someone could provide their feedback and advice.

https://preview.redd.it/abzxf6ox11481.png?width=958&format=png&auto=webp&s=e30794e1ab8d18eee11eda9297603ab60857f6cb

Introduction:

Hello everyone. In this post, I want to provide an overview of CHEM 2080 based on my experience or perspective. Generally, I will talk about what was the course like and its components. Please keep in mind that the format of the course may change so this post may not be 100% accurate. I will begin talking about the course and the instructor below.

The Course:

CHEM 2080 basically teaches about concepts of analytical chemistry and how they are applied in laboratory settings. I took this course with Jennifer Chen in Fall 2021, and it had labs. The lectures were online but the labs were mostly in-person. I found the course to be “meh”. The course contents were not really difficult. The labs, however, were a bit dreadful from my experience (I heard others saying that CHEM 2080 labs were brutal). I thought I want to point out that this course would demand you to work a lot more on it. As for my professor, Jennifer Chen was alright. She seemed rather nice, though ngl her lectures were boring. Her way of teaching was “meh”, like nothing special really.

Course Components:

The course components are written in the table below. Note that there are two marking schemes. Remember, this is was in Fall 2021.

First marking scheme:

Alternative Marking Scheme:

Quizzes:

There were no midterms. Instead, we had quizzes that were available nearly every week. A quiz would normally have about 5 – 7 questions in total and it would take about 30 minutes or more to finish. Some would be MC questions, some would be ticking questions (selecting more than one answer), and some would have calculation questions, which are often worth more than MC questions and ticking questions. A friend of mine took this course with Cora Young and he once told me that the quizzes can be tricky and that I have to study hard for them. Tbh, I didn’t find the quizzes to be really difficult. Then again, I took this course with Jennifer Chen so maybe the quiz questions changed? I think that in order to succeed in quizzes, you would definitely need to understand the lectures and absolutely do textbook problems, which I highly recommend.

Activities:

There were two activities: iClicker and Lon-CAPA assignments. As for iClicke

What do you do in analytical chemistry and also what do the different sub branches of analytical chemistry entail? like drug development for example. Also do analytical chemists work to do new research on atomic structure discovering new elements and compounds stuff like that etc.? Please detail what this branch of chemistry is because its not very clear when i search it up and it sounds very vague

40.0 mL of 0.010 M AgNO3 solution is titrated with 0.020 M KBr solution. Calculate the ionic strength at the equivalence point.

I can’t find any study guides for it online except for one you have to pay for. Any tips or general areas to focus on would be appreciated.

Hi,

What do you think what analytical techniques will be more and more important in the next 10-15 years and why?

Where will we see more innovation? Sample preparation or instrumentation?

For example: Nowadays the HPLC is a leading technique for analysis and liquid liquid extraction went out of fashion.

What comes next? What is the future?

Hello, I’m a higher-level chemistry student and I conducted an experiment with the purpose to determine the pKa of creatine monohydrate through titration curves.

In the experiment we did an acid-base titration with 0.1M HCL and 0.1M NaOH. We measured 5g of creatine monohydrate using an analytical balance and dissolved it in the HCL then did the titration. We then determined the neutralization point from color changes due to indicator. We did 3 trials with a creatine dissolved in HCl, and 3 without creatine dissolved in HCL (titration of HCL and NaOH only).

What is the average uncertainty of the creatine monohydrate mass? And what is the average uncertainty of the neuralization volume? The systematic uncertainties are 0.001g and 0.028ml respectively

In the analysis we need to plot dpH/dV vs volume of NaOH to find peaks which are the equivalence and half equivalence points. But why is that? Should it be dpH vs volume? And what is the uncertainty of this graph to add error bars and how find it? The uncertainties of pH and volume are 0.043 and 0.028ml respectively.

One last thing, it took 9.6ml NaOH to neutralize the solution without the creatine powder and 9.8 to neutralize it with the creatine powder. Why is this? Please include a detailed explanation for this part

Do you think this experiment is solid? What do you think are it’s limitations other than the systematic errors mentioned?

I would really appreciate answers because I’m kind of lost in all of this. Thank you!

My_qualifications - M.Sc. Analytical Chemistry

Total Experience - 1.6 years

Current CTC- 3.2 lacs

I have done MSc. In analytical chemistry and currently working in a Pharmaceutical industry. The salary I started at was just 1.8 lacs and now after 1.6 years and changing 2 companies its 3.2 lacs. I am really disappointed with the salary offered even after having a master's degree. I expected to be paid better than this.

Looking for someone to help me answer these last three problems on my homework. They are not entirely mathematical related, but short-answer (theory/application) based. Need done ASAP!

Topics: circuits (filters and amplifiers) and common analytical chemistry techniques

DO NOT MESSAGE ME IF YOU DO NOT HAVE VOUCHERS/PROOFS!

I am wondering if a Wilcoxon Signed Rank Test is an appropriate test for my experiment.

I am an Analytical chemist and trying to migrate our data analysis to a different software. I have a sample size of 25 pairs of data. We need to calculate 4 different compounds concentrations (in ppm) per sample. I am wanting to compare the results from each date analysis method.

HOWEVER, there is a large range for some of these analyses. For example, for compound A, one pair might have a concentration ~500 ppm, but the next pair might have a compound A concentration of ~2000 ppm. The absolute differences can range widely depending on the concentration of the compound in a sample (although the % differences are usually small)

Is a Wilcoxon Signed rank test per each compound and appropriate choice? Is there something else I can use?

has anyone taken these classes and can tell me what it’s like?

I'm wondering if anyone could give me some suggestions for old textbooks/resources about classical analysis, such as all sorts of chemical tests, titrations like permanganometry, and so on ("wet techniques"). I did some lab work with them on my second year in undergrad and I'm looking to review and learn some more.

Has anyone taken analytical chem? What was your experience and any tips?

For those who took the course in the past, do you remember how long they took to mark the final?

Are there any Analytical Chemistry tutors here? Or someone you can recommend?