Acid Definition and 683 Threads

Hi I've been reading a lot about esters and have the general idea but I am not sure about exact amounts of acid catalyst needed. say the following experiment was tro be carried out to form an ester R-C=O(O-R2) *X moles of R-C=O(OH) *10X moles of R2-C-OH *How much H2SO4 would be needed? i...

Hello, I have a question.Can one (theoretically) obtain Chlorsulphonic acid by disolving chlorhydric acid into sulphuric acid like follows: H_{2}SO_{4} +HCl=HSO_{3}Cl+H_{2}O . If not,how can one obtain the Chlorsulphonic acid?

We conducted a lab on Friday and today we have to answer a few post lab questions. I'm stuck on one question and it asks: Does sodium bicarbonate (aka Baking Soda) (NaHCO3) function as an acid or a base? What sort of condition will determine this? I know that sodium bicarbonate will...

Hi there. What is the conjugate acid of H2PO4. And what does it mean. H3PO4 or HPO4 I got it. It means when a base gains a hydrogen ION. H3PO4 is the right answer isn't it.

Difference between acid and conjugate acid :confused:

I'm going over to live in Europe in May/June and I want to take a sheet of acid over with me. I'm too scared to take it on the plane, so I was thinking of faxing it over before hand. Can anyone tell me if this will work?

Had a lab few days ago and a question was presented: Some people claim that women possesses better color vision than men. Suppose ths is true. Two people perform this experiment and their results are as follows: Student1: Acetic Acid Concentration - 4.5% Student2: Acetic Acid...

consider the titration of 50.0mL of 0.10 M methyl ammonia with 0.10 M HCl. Calculate the pH after 15mL of titrant= 11.05 25mL of titrant= 10.68 50mL of titrant= 8.98 60mL of titrant= ? At 60 mL there is an excess of 1 mmol of HCl. At this point do I say that the pH is 1 (-log of 0.10)...

Hello Here are a few questions: 1. O_{2}N-CH_{2}-COOH pKa = 1.68 Me_{3}N^{+}-CH_{2}-COOH pKa = 1.83 According to my book (Guidebook to Mechanism in Organic Chemistry), the first carboxylic acid is more acidic than the second. I fail to understand the reason for this, since in class...

Hi guys, Could anyone give me a hand with this one? During exercise, 2-hydroxypropanoic acid (lactic acid) is produced in the muscles. Deduce whether the ionised or non-ionised form of this weak acid (Ka=1.4*10^-4) is mainly present at the pH of the human body (pH=7.4).

I feel like an idiot asking this in a chemistry forum, but I have looked everywhere. I don't understand what acid and bases are, and how they work. I understand chemical bonding down to quantum physics, but I just don't understand this, what is happening in an acid?

acid or base? please help hi during a science lab we tesed various unknown substances to classify them as either acid or base. Some of the indicators that were used was: bromthymol blue, blue/red litmus paper, phenophthalein . One of the substances was acid according to 2...

can someone give me some insight to solve this in detail : what is the ph of .01 Naoh ? and what is the ph of .035M acetic acid ?

Hello, I'm having a bit of trouble with an experiment. It involves converting furamate and citrate into amino-acids using a transaminase. We are using a liver homogenase, with the amino-donor being alanine. However, whatever resource i use, furamate/citrate is not converted into an...

Could someone please give me a hand with this: A solution of hydrochloric acid was standardised by titration and found to be 0.123 M. How much water must be added to 1dm3 of this solution to make it exactly: a. 0.1M and b. 0.12M ? Thanks ppl

Hi People, Could someone please give me a hand with this question : Explain why a mixture of pure nitric acid and pure hydrochloric (VII) acid (HClO4) contains H2NO3(+) ions and ClO4(-) ions. Thanks a lot, Joe

First, if this is in the wrong section...sorry. I thought this would be the right place because it is dealing with homework. Here is the problem: If excess hydrochloric acid reacts with 4.6g of barium nitrate, how man grams of barium chloride are produced? If the hydrochloric acid is...

Hi, Has anyone heard of a layer of boric acid being used as a heat shield? I know it is often used in solution and other composites to act as a fire retardant, but what I'm looking for is any reference to boric acid, by itself, being used as an insulator. Maybe like a layer of boric acid...

Hi, Has anyone heard of a layer of boric acid being used as a heat shield? I know it is often used in solution and other composites to act as a fire retardant, but what I'm looking for is any reference to boric acid, by itself, being used as an insulator. Maybe like a layer of boric acid...

in froath floatation process of concentrating the sulphide ore how is froath containing sulphide ore broken by adding dilute acid what is the actual reaction

I understand that with an ionic acid (when in solution), either the +ve ion OR the -ve ion can be the proton donor. Are there any ways to tell which ion does the donating by just looking at the chemical structure of the acid? I'd appreciate if someone could point me in the direction of an...

I while back (in the distant days when i was in education...I'm a day out of education now!) we were studying amino acids in chemistry, and I asked my chemistry teacher whether uracil was an amino acid or not. She didnt know but said she would find out, which she didnt, so I am asking the...

Heya's Having some problems with the following question: Trimethylacetic acid C_4 H_{11} COOHis a weak monoprotic acid. When 0.0010 mol of Trimethylacetic acid was dissolved in 100mL of water, the concentration of trimethylacetic ion was found to be 3.0 \times 10^{ - 4} mol.L^{ - 1} a)...

Hello I really need help for working out the concentration of an acid / base. 1) How can we use a simple thermochemistry measurement and a density measurement, to find the concentration of an acid or alkali? (other than titration) 2) How do you devise an experiment to estimate the...

Why is HSO3- a stronger acid then H2SO3? And also, i know that When the size of an atom X increases, the H-X bonds decreases, meaning the strength of the acid increases since more H+ are ionized. But when when H-X are more electronegitive, doesn't it mean the bonds between the H-X gets...

After doing my first track practice today (and running about 4 miles), I began thinking about what a pain it is that lactic acids can't be neutralized quicker than they currently are. Is it known what chemical in the body eventually breaks them down, and is it available as a suplement?

__________HA <------> H+ + A- initial (mol) .1 ________ 0 ___ 0 change __ -x _______ +x ___ +x final _____.1-x _______ x ___ x Ka = 10^-8 find pH of .1 mol acid since ka X 100 = 10^-6 < .1 can use initial concentration: .1-x = .1 Ka = [H+][A-]/[HA]...

If a weak acid is added to a strong acid, does it make the solution more acidic or less acidic? Assuming that the weak acid is not one of those ions that can turn into a stronger acid or a stronger base (like H2CO3 <--> HCO3 <--> CO3). I was thinking something like adding ethanoic acid to...

Hi. I was reading through my organic chemistry book and they had a little piece on carbonic acid. So CO2 reacts with water and produces carbonic acid, very nice, I read about this before. But now that I've been enlighted with organic chemistry and the idea of mechanisms behind every reaction I...

"When applied for a few minutes after a potential difference is applied, it is observed that the current through the specimen increases substantially although the applied potential difference remains constant. Explain why the current should increase in this way." Could I be correct in...

Hello this is my question. Ok I need to find the molar mass of acetic acid and then calculate the mass of acid in the volume of vinegar I used. Now the equation for the lab i did was CH3COOH + NaOH produces NaCH3COO + H20 The information I have is that the concentration of the sodium...

We determined our melting point to be 199 C. Which would correspond to (2R,2S) and (2S,3R) 2,3-dibromo-3-phenylpropanoic acid (mp 202-204 C) but we are trying to determine whether this is a syn or an anti addition. Any suggestions? Thanks Nautica

The molarity and percent by weight of the acetic acid in the vinegar. Use a value of 1.005 g/mL for the density of the vinegar. Acetic acid molarity in vinegar = .208 mol / L How do you calculate the Percent acetic acid by weight (using the acetic acid molarity)? Thanks for the help.