Chemical compounds which yield hydrogen ions or protons when dissolved in water, whose hydrogen can be replaced by metals or basic radicals, or... | Contact experts in Acids to get answers
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Questions related to Acids
Hello, I am currently working on building standard curves for VFAs with HPLC. I've managed to get consistent results with formic, acetic, propionic and butyric acid, where the bigger the acid, the...
09 September 2019 4,726 5 View
in heterogeneous catalysis we always need to determine the porosity (pore size and volume and specific surface area) of the solid materials synthesized in the laboratory, in order to find an...
09 September 2019 3,722 4 View
If yes what is the concentration of acid required?
09 September 2019 1,335 1 View
How can I attach an amine group (-NH2) to a carboxyl group (-COOH)? What are the experimental conditions, such as temperature, atmosphere, pH etc? I want to attach mPEG-NH2 to α-Lipoic acid in...
09 September 2019 4,717 5 View
Hello, I worked on the adsorption of the methylene blue, the malachite green and the congo red by diatomite. In the regeneration part, I treated the diatomite loaded with the dyes by using the...
09 September 2019 3,501 3 View
Cassava starch hydrolyzed with hydrochloric acid, addition of anhydrites (Caso4) to the mixture . What will be the effect in PH scale meter? Will the PH value increased or decreased?. I need help...
09 September 2019 4,343 1 View
Whether purging of nitrogen gas is required or not, during the acid-base titration of unknown samples using potentiometric titration method ?
08 August 2019 1,268 4 View
As I read in an article this reaction happen under harsh acidic condition but I couldn't use this acid, I'm looking for a catalyst without water to make the condition acidic or basic.
08 August 2019 3,792 4 View
I am looking at urease, glycosidase and phosphatase (acid) at this stage. The protocols I have all involve hordes of flasks. Is there shorter methods available? Shorter in the sense of using...
08 August 2019 7,055 4 View
Hello, I am currently employing advanced Marfey's analysis on a small peptide in order to determine absolute configuration of each amino acid. However, I'm having an issue in which the tyrosine...
08 August 2019 9,547 2 View
What is the use of bakery waste in addition to ethanol and organic acids production?
08 August 2019 8,359 2 View
The NH3-TPD was used to test acidity of used HZSM-5 and compared to fresh catalyst. Contrary to the expected results that the acid sites decreases due to coking, the characterization showed...
08 August 2019 4,375 3 View
I have an issue with a research project. I must determine the concentrations of HNO3 and H2SO4 of samples taken from tanks in an anodizing process. How can I determine the concentrations of both...
08 August 2019 6,992 4 View
Her, I have a Dextran ( mw : 15, 000) , a bioplymer polysaccahride, and i m perfoming the hydrolsysis part by acid treatment & higher temp. to get desired molecular weight of polysaccaride (...
08 August 2019 4,513 4 View
How to increase the interaction of acrylic acid (block copolymer) in aqeous solution
08 August 2019 1,913 3 View
Hi every one, I'm working on developing a reaction kinetics for a set of 100 sub reactions. most of the elementary reactions has a clear k value but some of the acidic reactions have just the PKa...
07 July 2019 2,459 1 View
I need to determine the amount of Nitrogen present in my waste-water sample, i'm confused. should i take the sample directly for distillation ? or should i digest the sample before distillation ?
07 July 2019 2,931 6 View
In HPLC -MS analysis, observed mass and theoretical mass of phenolics such as P-coumaric acid did not match. Observed mass is less by 18 then theoretical value. what will be the possible...
07 July 2019 900 11 View
In my research, I used L-ascorbic acid as reagent, usually, when I dissolved ascorbic acid in water, it gave colorless. But now, It has yellow color. How can it happens? and What can I do so that...
07 July 2019 6,304 3 View
I am using nitric acid and perchloric acid 1:3 mixture for the digestion. But about a hour after hitting, the 0.5M nitiric acid is overflowing in the absorption vessel... What's the cause of that?
07 July 2019 5,769 1 View
It is nitration reaction and using the reagents such as nitric acid, acetic acid or acetic anhydride and sulphuric acid
07 July 2019 5,391 8 View
I am evaluating the concentration of chemical inhibitors in pretreated sugarcane bagasse before and after detoxification. These inhibitors include: Furfural, 5-HMF, acetic acid, formic acid,...
07 July 2019 7,363 2 View
I was analysing the acid value of some fatty acids. When it come to stearic acid, the substance going foamy and white-colored, and also become something creamy. I was not sure if I have reached...
07 July 2019 4,711 5 View
Average surface energy in the unit of mJ/m2 .
13 June 2019 1,966 2 View