monolog

When I asked I was told the brackets are there to indicate whatever. Well, I'm not gonna waste my time here while you circle jerk simple questions between yourselves. Wanna help people? Straight forward do it. Wanna use this forum to treat strangers the way you can't treat your students? I don't need that shit. Tutoring for 9 years? That sure explains it.

Not yet, I can't. But I will. Or maybe I won't. I don't know how to get to those values. I don't even know which is [A-] and which is [HA]. From the time management point of view it's not fruitful to waste time trying to do some juggling patchwork just to earn another point in this assignment. It's actually ridiculous to waste 2 days on something I could learn in 20 minutes with a private tutor. It's definitely better to move on to geology and make sure I excel in that one as I can actually learn the subject on my own.

I'll try to figure that out. These are good guidelines, thank you. I'll google more on it, but for now I'll be going back to the assignment. Have a good day. I will try. Have a good day.

So did my false indignation. I definitely lack basic knowledge. How do I know if a compound partially or fully dissociates into ions in a solution? What in its formulae gives me that information?

I wouldn't be here if I knew. Being confronted with my ignorance does not help. Explaining things to me, does.

This is what I did: "Adding 30ml of NaOH gives us a 130ml solution. therefore:"

He actually uses the HH equation to find the pH. Honestly, I don't know which species those correspond to in my equation. Would you explain it to me? Luckily the value for both is 0,769, so I end up with log1 in the HH equation. The pH is 4.74. I hope I got it right.

Hi. I think my posts are limited to 5 daily, that's why I didn't reply. Yes, I did read it. As hypervalent_iodine says, I'm lacking too much fundamental knowledge. De-synced communication won't really help me right now. Thanks for your time anyway. I do appreciate you putting in the effort. You are right. I think I need a private tutor to help me at this point. I did find, however, a very helpful video which I believe will help me answer (b) and (c). Here it is: I thing I can solve the problem now. It does address the exact same problem, doesn't it? Anyway, thank you very much for your time. I will keep this forum in mind, and also your recommendations. Best regards.

This is the equation, right? pH = pKa + log10 ([A-]/[HA]) How does this: NaOH + CH3COOH → CH3COONa + H2O, translate into values in the equation? What does [A-] and [HA] stand for?

Replying to Studiot: Hi. Thanks for your time. You asked for the equation and I gave you a reaction going to completion, which I believe is the answer to (a). I don't know how to put that in a equation. Does sodium acetate precipitate out? I don't know. All I have is the given info. If not what does actually happen? An acid and a base mix, but i don't even know how to identify an acid and a base without looking up the compounds online, meaning I'm in trouble when the exam comes. Do you know what Data: Ka = 1,80 × 10-5 means? It's the acidity constant, but I honestly don't know what to do with it. Have you done any reaction kinetics? No. Are you familiar with the following equations? No. [H3O+] , [H+] and [OH-] are exchanged somehow, but I don't know what exchanges with what nor why (electronegativity?). In sum, I don't think I can learn this on my own in time to finish this assignment and get a good grade. Will be needing a private tutor. Biology, geology and statistics, I can learn those on my own. Chemistry, no way. If you think you can explain the basic rules behind the [H+] [OH-] transfers so I can try and make the calculations, great. If not, thanks anyway. Hi, and thanks for taking the time to help me. No, I am not familiar with it. I'll look it up now. I do have literature given by the university, but with all of the classes' assignments piling up I didn't have time to study it. Acid-base equilibrium, titration, energy reactions, entropy, and Gibbs energy are the subjects I have fallen behind on. In order to succeed in this assignment I need to go straight to the point (I'll go through the whole semester later in preparation for the exam). What do I need to focus on in order to answer these questions? Can you give me a step by step guide? Thanks in advance. This is the equation, right? How does this: NaOH + CH3COOH → CH3COONa + H2O, translate into values in the equation? What does [A-] and [HA] stand for?

NaOH + CH3COOH → CH3COONa + H2O I have read it. I'm looking to be guided, maybe get a step by step explanation of what is going on and what to do so I can answer the questions. Got time for that? I would appreciate it.

Part a is done, yes. How do I find the pH of any solution?

Hi. I'm doing a chemistry assignment in which I'm having difficulties. I am on a open university course (Environmental Sciences, first year) and never had chemistry in high-school (coming from the services area), therefore I need some assistance. Whatever help i get is welcomed. This is it: A solution of 100 cm3 of acetic acid (CH3COOH) with a concentration of 0.2 mol / L was titrated with aqueous sodium hydroxide solution (NaOH) at a concentration of 0.1 mol / L. a) Write the chemical reaction that translates the titration. b) What is the pH of the solution after adding 30mL of NaOH c) In a titration what is the meaning of the expression "point of equivalence"? For the given example, calculate the volume of titrant needed to reach this point as well as the pH value. Data: Ka = 1,80 × 10-5 Thanks in advance.