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  1. angelicsuccubus

    Chemistry: Post your doubts here!

    for 3a iii ) As you go down group 7, the number of electrons in the molecules increase which means the Van der Waal's forces between the diatomic molecules become stronger therefore the halogens become less reactive as you go down the group. (Because I-I bond is longer, it is weaker but that...
  2. angelicsuccubus

    Chemistry: Post your doubts here!

    what's up? what's your question/confusion?
  3. angelicsuccubus

    Chemistry: Post your doubts here!

    oh yeh sorrry.. I just realised that!
  4. angelicsuccubus

    Chemistry: Post your doubts here!

    Here, I wrote it just how I thought it.. . https://www.dropbox.com/s/oqs22luv6wut9nt/IMAG0285.jpg Edit: J is wrong, it should be CH3CH(OH)COOH [you know this cause the empirical formula is CH2O ]
  5. angelicsuccubus

    Chemistry: Post your doubts here!

    you're gonna like it ... but its reallllllly long and I should study it now.. cause I have my m2 exam the day before it and I really need to do well on that.
  6. angelicsuccubus

    Chemistry: Post your doubts here!

    -_- we should shutup, this is a chem thread.. are you doing A2 chem too? cause I don't like the section B chapters in my text book.
  7. angelicsuccubus

    Chemistry: Post your doubts here!

    lol its okay .. translation websites are not intelligent so I can forgive you. And I studied french in from gr6-8 then gave the french IGCSE .. =]
  8. angelicsuccubus

    Chemistry: Post your doubts here!

    LOL! votre accueil is out of context... what you just said basically means your (as in something that belongs to me) and welcome! (as in welcome to this place) ... what you're supposed to say is "de rien"
  9. angelicsuccubus

    Chemistry: Post your doubts here!

    merci
  10. angelicsuccubus

    Chemistry: Post your doubts here!

    tell me something...when we are finding the oxidation numbers of elements in compounds in an equation... do we take the number of molecules in account? Like 2NH3 .. would I take the 2 in account?
  11. angelicsuccubus

    Chemistry: Post your doubts here!

    no dont get me wrong, I love chem... but studying when you feel like you're re reading a story is boring.. and I hate studying by myself
  12. angelicsuccubus

    Chemistry: Post your doubts here!

    Because the oxidation number of Cl in PCl3 is -3 and since PCl3 is neutral over all... P has to have the oxidation no. +3 to cancel out the -3 and the over all oxidation state of PCl3 can be zero. (-3+3=0) The oxidation no. of Cl2 in SCl2 is -2 so for the entire charge to be zero S will have...
  13. angelicsuccubus

    Chemistry: Post your doubts here!

    studying for chemistry is the most boring out of all my subjects =_=
  14. angelicsuccubus

    Chemistry: Post your doubts here!

    yeh you're right ... so induced dipole- permanent dipole (Debyce force), permanent dipole- permanent dipole (keesom force) and instantaneous dipole-induced dipole (london force) are all Van der Waal's This is what happens when you read your notes after a year and misinterpret them xD
  15. angelicsuccubus

    Chemistry: Post your doubts here!

    dude Im gonna kill you.. I just posted that a sec ago!
  16. angelicsuccubus

    Chemistry: Post your doubts here!

    so you're calling a hydrogen bond a van der waal's force too? "all intermolecular forces are collectively known as Van der Waal's forces" and if you're righ, sorry for arguing ..guess I wasn't taught right.
  17. angelicsuccubus

    Chemistry: Post your doubts here!

    Umm... dude you're negating yourself. As far as I know Instantaneous dipole-Induced dipole (temporary dipoles) forces have London Forces and Van der Waal's forces under them. And then dipole-dipole forces are basically permanently dipole-permanently dipole forces... the one between two polar...
  18. angelicsuccubus

    Chemistry: Post your doubts here!

    yeh the requirements for a hydrogen bond are: 1. H atom attached to a highly electronegative atom 2. an unshared pair of electrons on the electronegative atom.
  19. angelicsuccubus

    Chemistry: Post your doubts here!

    there must have been an indication that the molecule had a similar shape to water.. .14.5 is the bond angle in H2O, 107 in ammonia and 109.5 is for a tetrahedral molecule (where there are for pairs of electrons).
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