acid base - If caffeine is an alkaloid, why is coffee acidic ...
Oct 17, 2014 · I have just put together on my mind these two facts: caffeine is an alkaloid and brewed coffee is slightly acidic (pH = 5). My Biology teacher and my Chemistry teacher could not elaborate …
Acid-Temperature coagulation of milk - Chemistry Stack Exchange
Jan 8, 2020 · As in my second experiment, I've used a lesser acidic coffee powder (more roasted) but still observe coagulation. In fresh dairy milk, is there any relation between titratable acidity and heat …
acid base - Caffeine dissolution - Chemistry Stack Exchange
Oct 27, 2015 · I am looking to add caffeine powder in pure form to water that has a pH level of 7 or higher. What would the pH level be if I do this? Is Caffeine itself acidic?
Why does pH affect fermentation? - Chemistry Stack Exchange
May 29, 2014 · A pH of 5 is about the same as a cup of black coffee, and is about one hundred times less acidic than orange juice. I also found this article which describes another interesting effect - the …
The influence of lemon juice & sugar on the ph-value
Jun 2, 2013 · Now, if I add lemon into my tea, it tastes more acidic, so the ph-value would be more acidic right? If I add additionally some sugar, the tea tastes not sour anymore.
Adding H2O2 in water does what to the pH of the water?
Aug 13, 2021 · The link above says if the water is acidic, $\ce {H2O2}$ will dissociate into hydronium + hydroperoxide ($\ce {H3O+ + HOO-}$). I imagine the production of hydronium will increase the …
What type of acid is found in tea? - Chemistry Stack Exchange
Feb 26, 2016 · We were trying the litmus paper test and we found out that tea is acidic. So the question came in my mind and my science teacher could not give me any satisfactory answer: what acids are …
Why will CuSO4 solution be acidic? - Chemistry Stack Exchange
May 4, 2016 · An end-chapter problem posed in an 11-grade texbook asks to analyse whether a water solution of CuSO4 will be acidic. The standard answer is yes, because "$\\ce{H2SO4}$ is a strong …
Is tin and tinware toxic? - Chemistry Stack Exchange
Aug 30, 2012 · Boiling in air with dilute acid found in coffee for extended periods of time, and left to warm over many hours, suggests a possible path for some tin from organic acids, and much more …
Polarity of caffeine - Chemistry Stack Exchange
Aug 6, 2024 · Both water and DCM are also polar? DCM is a typical non polar solvent. "Having dipole moment" has little to do with this. Caffeine is an aromatic amine, they're a bit more soluble in acidic …