MedVision ad

Search results

  1. T

    H2so4

    They have to give you the DOI.
  2. T

    H2so4

    Thanks to everyone who made a contribution to the clearance of this misconception that I had, it is not a significant one, but it is always good to clear things up! I thought that strong always means lower pH, but I went through my amazing set of notes to revise this concept again and realised...
  3. T

    H2so4

    H2SO4 is more acidic and has a lower pH but HCl is stronger. The End.
  4. T

    H2so4

    If both H2SO4 and HCl have a 100% degree of ionisation then their pH should be equal to each other. However, since H2SO4 undergoes a second ionisation, it adds to the first ionisation, increasing the concentration of H+ [H+] making it more acidic, however, the second ionisation is theoratically...
  5. T

    H2so4

    LOL We use concentration of [H+], divide it by the concentration of the whole solution i.e. [H2SO4] then multiply by 100 to find the degree of ionisation...
  6. T

    H2so4

    Yes. You assume it is completely ionised in both first and second ionisations which makes it stronger than HCl, which I think is wrong... If they give you concentrations you can do [H+]/[Solution]x100=DOI...
  7. T

    Citric Acid.

    These are the main ones, I think. And esters are easy CnH2nO2 and put the COO in the middle. Acid Mono: HCl, HNO3, CH3COOH Acid Di:Sulfuric acid, Carbonic acid, chromic acid, oxalic acid, sulfurous acid, glycine, hydrogen sulfide Acid Tri: Phosphoric acid, Citric Acid, Base Mono: KOH, NaOH...
  8. T

    H2so4

    We just multiply [H2SO4] by 2 and then use -log[H+] to find the pH of the solution but that gives a lower pH meaning H2SO4 is more acidic. I just tried it on my calculator, type -log(0.001)=3 but if you type -log(2x0.001)=2.699 which means H2SO4 is stronger. Also, in the 2008 (I think) JRAHS...
  9. T

    [][/]

    Cool.
  10. T

    Citric Acid.

    Sorry for the wording of my question. I was asking about how we identify them. The only way to identify weird ones is to know the structural formula e.g. citric acid. So I was asking for which acids/basis/esters do we need to be familiar with the structural formula in order to be able to...
  11. T

    H2so4

    When calculating the pH of H2SO4 do we multiply the concentration by 2 i.e. -log[2H+] This means it is stronger than HCL so is that always true? What about H3PO4 and other polyprotics? or since they are weak we don't multiply the concentration by anything?
  12. T

    Citric Acid.

    I know why things are called mono, di, tri protic... That's not the question my friend.
  13. T

    Replies

    ok thanks
  14. T

    [][/]

    Works :)
  15. T

    [][/]

    OK Thank you :)
  16. T

    [][/]

    Does the image have to be a linK?
  17. T

    Citric Acid.

    Why is citric acid triprotic? What other acids are triprotic other than citric and H3PO4. Can anyone please list the names of the acids/bases/esters for which we have to memorise the structural formula i.e. knowing the molecular formula (C6H8O7) wouldn't help in classifying citric acid as a...
  18. T

    [][/]

    so [tex ]...[ /tex] is for latex [video ]...[ /video] is for videos What do I type if I wanna upload an image? I mean how do I upload an image? I tried to upload a picture to a solution to a maths question through attachment and an error message kept coming up...
  19. T

    Replies

    What is the easiest way to check if someone replied to my posts/a post I commented on. At the moment I search my name so all posts that relate to me come up but I'm sure there is a better way. Thanks.
Top