-a pipette is used to remove 10cm3 portions of solution z
- each portion is titrated with 0.0050moldm3 sodium hydroxide
- mean Titre is 21.10cm3
Calculate number of moles of sulfuric acid in the 40cm3 if solution Z
Answer: moles of naoh=(21.10/1000)*0.00500=1.06*10^4...
Hello all, I am new to this forum, and was wondering if I could get help with the following problem.
Codeine contains a nitrogen atom that can be protonated to give the conjugate acid of codeine. Calculate the pH of a 3.42x10^-4 solution of codeine if its conjugate acid has a pKa of 8.21.
Propionic acid, HC3H5O2, reacts with KOH. What considering the point in the titration where 19.10 mL of .100 M HC3H5O2 has been mixed with 21.05 mL of .875 M KOH. Find each value of:
Hope someone out there can help! :)
I work in a manufacturing company where we use sodium hydroxide (caustic) flakes in our reaction process.
When tested in the lab (using acid-base titration - H2SO4 and Phenolphthalein as the indicator) the concentration of the caustic flake works...
I honestly have NO idea on how to go about this calculation, it appears simple but I'm struggling, can somebody kindly go through the steps with me as I REALLY want to learn this!!
What is the Ratio of [Base]/[Acid] in the following Buffer system?
Target pH = 9.89
I am having a hard time determining this topic....
the conjugate acid/base of wek acid/base will change the solution pH, but a lot of time I am just so confused...
here is examples:
please explain these to me, thank you!
what is the concentration of a solution- KOH, for which the pH is 11.89?
I was ok up till this point using log and inv log, and using Kw was fine.
The answer is apparently 7.8 x 10-3, but how, i keep getting 7.76 x 10-11