Acid Definition and 698 Threads

Stumbled upon this when I was looking at lewis dot electron structures. The phosphorus acid is dibasic. What prevents the third hydrogen from attaching to the third oxygen instead of the central phosphorus? Is there a theoretical explanation or we can only memorize this for a fact? Thanks,

Hello, I have a question or two that I need help with: What happens when you put magnesium bisglycinate and citric acid into water solution? Does magnesium change form here? Kind regards, IN

[Mentor Note: Two thread starts merged into one] I need to remove the Aluminium heat fins from a CPU heat extange lined around some copper water heat pipes. I could use a saw, cnc or grinder to remove them, but it seems that this way could be cleaner, and less probable to ruin the heat pipes...

One of the alternatives was NaBr My resolution was as follows: NaBr + HCl forms NaCl and HBr I researched and saw that HBr would be a gas and would be denser than air because its molar mass is greater. However, the answer was not that. My error is in which step? In the reaction? What would...

Hi everyone! I can‘t solve this following task. Can you explain me how I have to draw the mechanism? Task: Solid-phase nucleic acid synthesis: deprotection and cleavage of carrier with 2'-O-TOM protected suitable phosphoramidite building block synt. dinucleotide of 5'-UG. I started with...

Hi everyone! Is this sentence correct? "Phosphoric acid is linked to the hydroxyl groups of the sugars via ether bonds" I would say yes, but in the solutions this phrase is wrong and I'm a little bit confused. I think that's correct, isn't it?

I have done all of the questions apart from c and d. For a I got the answer 2.58*10^_5 cm^3 B) 3.72*10^-7 cm But for c I don’t really know how to start. I first thought of using the formula for volume of cuboid but don’t know how that’d give the answer for the dimension. For D, I turned the...

Hello All, I am working on a database project and I am good at SQL commands. I want to know which one supports ACID compliant between MySQL and PostgreSQL. I have asked this question on Quora and according to this post, MySQL is not completely ACID compliant. It supports ACID only when used in...

Hello, I'm in the process of developing a sugar paste for hair removal and trying to find a good ratio between sugar, water and acid in order to get a gewy consistency. I currently use 8 tbs sugar, 4 tbs water and 2 citric acid and let it reach a temperature around 128 degrees Celsius (262.4...

Hi, I think of a human body as an intelligent biological machine. Could you please help me with the query below? Question: The stomach produces gastric acid and pepsinogen among other enzymes etc. When a glass of water is taken without any food, wow would the stomach react to water? Assume...

I have an ash which is a mix of oxides (Cr2O3, CuO, ZnO, PbO, CdO, NiO, SiO2, MgO, CaO). I am adding phosphoric acid. But as a weak acid, will it react with oxides? If so, are these conversions 100% or more of a equillibrium (partial conversion). I you need more information, be sure to ask.

I have a solid ash mix containing oxides(ZnO, NiO, MgO, Cr2O3, etc.) and salts (Na2SO4, K2SO4, apatite, etc.). I am supposed to write all of the reactions with phosphoric acid (should be between 1 and 2 mol/l) and put it in a simulation for mass and energy balances. But since phosphoric acid is...

I have a chemistry project involving milk coagulation under certain circumstances. One of the circumstances is milk combined with citric acid or pineapple juice. I need to find the chemical formula of this reaction.

Hello , the problem that i refer to is present when we try to calculate the pH of a solution without any assumption. in a lecture entitled "calculating the pH of a strong acid/base solution " after adding a certain amount of HCl in water we are asked to calculate the pH (the amount of HCl and...

I know that food is dissolved in hydrochloric acid in the stomach, and carbohydrates are eventually extracted for use in cellular respiration which if I understand correctly is essentially a complex combustion reaction, using oxygen and releasing CO2. Outside the stomach, I can partially...

I am interested to see if anyone knows the easiest way to mono-esterify a mono-phosphate salt group to a carboxylic acid. How to facilitate the resultant -> product ? CH3COOH + NaH2PO4 ‐> C2H4NaO5P + H20

Suppose we add a weak acid HA into pure water, so that upon addition its initial concentration is c. The following equilibria should establish in the system. $$\text{HA}+\text{H}_2\text{O}\rightleftharpoons\text{H}_3\text{O}^++\text{A}^-$$...

This might be a 'that's just how it is' sort of question, but are there any theories of how humans and higher apes have evolved so that they don't break down uric acid? All other animals break this down into allantoin, and fish go one further and break that down into ammonia. Did 'us apes' end...

I think the answer is D because both molecules can hydrogen bond with their OH groups, but the C=O bond in ethanoic acid is polar and contributes to dipole-dipole interactions. The solution says B is the correct answer, because ethanoic acid molecules strongly hydrogen bond so that most...

Using the first equilibrium, H3A <-> H2A- + H+, the [H+] is solved to be 0.01165 M ~ 1.1 * 10^-2 M. Using the second equilibrium, H2A- <-> HA2- + H+, the additional change in H+ is found to be 1.8 * 10^-5 M. The solution says that this second equilibrium is negligible, because 1.1 * 10^-2 M +...

The solubility product for water is 10 to the minus fourteenth power.(water forming hydronium ion and its complement). What is the solubility product of pure acetic acid forming HHOAC(+) and OAC(-) ?

What is true about the pK of the analyte? a) pKa = 9.2 b) pKb = 9.2 c) pKb = 4.8 d) pKa = 11.7 The halfway point is at point 4, at approximately pH=9.2. Therefore, the pOH = pKb = 4.8, and I think the answer is c). The solution says b) is the correct answer. Could anyone explain why, or whether...

is muriatic acid the same as hydrochloric acid? here in Brazil in markets it sells muriatic acid and disinfectant sodium hypochlorite active chlorine 2.5% if someone uses these two products if they are stopped for cleaning the bathroom when the bottles are open they evaporate it travels all...

I have tried corn mill, now I am trying corn from a grocery store can. I tried 5% vinegar, now I am trying 40% hydrochloric acid. Heat to 150° F for 2 hours. Starch should turn to sugar but it is not working? I don't know how much acid to use to make this work? 1 lb corn + 2 lbs water +...

Hello everyone, happy to have found this forum! My name is Maruska. I was wondering if anyone could give me ideas/suggestions on how, in general, to remove capric acid (caprate) from estrenes? Thanks for any help/suggestions.

I'm curious what weak acids will form soluble salts with aluminum, but not silver. From a solubility chart (https://www.flinnsci.com/globalassets/flinn-scientific/all-product-images-rgb-jpegs/ap6901etc.jpg?v=cc7f986a028e4adf833ea6341200add2), HCl, HBr, and HI will form soluble aluminum salts...

so my question is how do I turn .1M HCL into a super strong acid like 10M or higher HCL. What is the highest M ever recorded for HCL? At what Molarity do I have to wear gloves and avoid skin contact?

The principal equilibrium in a solution of NaHCO3 is HCO3-(aq) + HCO3-(aq) <-> H2CO3(aq) + CO32-(aq) Calculate the value of the equilibrium constant for this reaction. My solution: This overall reaction is the same as the sum of the following reactions: HCO3-(aq) <-> H2CO3(aq) + OH-(aq)...

Use the equivalence volume from the pH curve to calculate the concentration of the acid, HA. I'm not sure which equation to use or how to approach this question (Attached). Please elaborate on the steps on how to answer the question. Thank you!

Found a blue water barrel at a thrift store. It is empty, no order but it held belcline 200 aka polymaliec acid. The barrell will be used to hold food scraps, dirt to make compost. How do i clean the barrel? Water? Or should i try and find another barrel Thanks

I know that both Pyro and Meta phosphoric acid exists in solid form.But the temperature mentioned here are more than melting points of both. So the acids will be obtained in liquid state.But the answer was given as b). I can't make out the reason.Please explain.

The problem states that I'm adding a certain volume of a known [KOH] to a certain volume of a known [HCH3COO]. The goal is to calculate the final pH. Since I don't know the K value of the rxn of HA w/ OH-, I set up 2 equations and combined their K values to derive the K value. Since the new...

I'm aware that the structure on the left is correct, but given that the formal charges are the same for each structure, I can't figure out why hydrogen is more likely to bond to the sulphur atom than it is to the nitrogen atom. Thank you for your help here!

I was just thinking on the fact that there are some comercial gas masks . These ones have a filter, that doesn´´´'t let the Hydrochloric acid gas molecules to go into the mask. This is the way it basicly works, isn't it? So this filther has some little holes that are smaller than these...

For finding the pH of the acid, I made use of the equilibrium law (or the law of mass action) to arrive at the degree of dissociation which I later used to get the [H+] concentration. I am stuck in finding the pH of the salt solution. ##CH2ClOO^- + H2O <---> CHClOOH + OH^-## Could you please...

Zinc chloride is Electrophilic and so acts as a Lewis acid.This characteristic is due to it's ability to accept electrons to it's 4 d orbital.My question is why it receives electrons to it's 4 d orbital when 4 p remain empty( according to Aufbau diagram)?Are there any other d block element...

Hi, everyone. I would like to test for the reaction between carbonic acid and copper (to simulate the effect of acid rain on copper). However, I find that many supplies failed to provide carbonic acid (either in powder or liquid form). Some says that carbonic acid is unstable and thus cannot...

This question says: An HA weak acid solution with a molarity of 0.1M is dissolved in water. In the new solution, is the molarity of OH- greater than the H3O+ molarity, or the opposite? Or are they equal? I came up with two possible answers: 1. [H3O+]>[OH-] because there are no hydroxides...

So my professor covered acids and bases recently, and this is how he presented the method (please see attached word document). I believe its the same as the I.C.E method, though I am not sure. Anyways my problem is perhaps conceptual, but I don't understand why the concentrations at equilibrium...

Hi everydoby, the closest thread I found was this one, https://www.physicsforums.com/threads/production-of-sulfuric-acid.77077/, but I am not puzzled by and "missing oxygen". I'm trying to find a detailed description, or even better a video, where someone tries to replicate the process that we...

I am curious as to what is the value of the molar heat of self-decomposition of nitric acid. I've searched online and cannot seem to find the above value. Essentially, I am looking for the value for anhydrous nitric acid although I am aware that the acid is generally not provided in pure...

If we heat up hydrogen gas in a sealed container to tens of thousands of degrees Celsius (via microwave or other radiation) , until the nucleus and electrons start to separate from each other, which becomes plasma. Then use a polarised magnetic field to separate the protons and electrons. Where...

HCl and HF are amongs Hydrohalic Acid group

I have two cars, one an early 2000 Honda CRV and second one a 2016 Subaru Forester. The Subaru Forester is prone to acid rain marks in the windshield and side windows and rear. But the CRV didn't seem to have obvious acid rain after more than 14 years parked in open air. Are some glass more...

Because of character limit I have exposed my question in the attached pdf

Total no. of amino acid in each transmembrane domain = 4 nm/ 0.15 nm +1 =27.66 Total no. of amino acids in 7 transmembrane domains = 27.66 x 7 = 193.62 ≈ 190 Hence option d. Is my approach correct?

During episode 2 of the HBO miniseries “Chernobyl”, the search lights held by the three technicians entering the area beneath the reactor eventually go out from exposure to radiation. If the search lights were powered by lead acid batteries, how does radiation interfere with and/or hasten the...

Summary: I came across a question in my chemistry homework where i am supposed to write the balanced equation between ammonia and benzoic acid. I am not really good with chemistry but it's my last exam of chemistry ever in my high school experience, so i need to (and want to) get a good grade...