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  1. xIshtar

    How is your preperation for Chem Unit 2 ???

    Means there are more London Forces, and thus it is stronger.
  2. xIshtar

    How is your preperation for Chem Unit 2 ???

    Total electrons effect because it increases the size :)
  3. xIshtar

    How is your preperation for Chem Unit 2 ???

    Thanks for the heads up :)
  4. xIshtar

    How is your preperation for Chem Unit 2 ???

    When methanol reacts with Na, Sodium Methoxide is formed, which is white. The sodium fizzes and gets smaller, effervescence is also seen as H2 is given off
  5. xIshtar

    How is your preperation for Chem Unit 2 ???

    Same number of valence electrons, different number of total electrons.
  6. xIshtar

    How is your preperation for Chem Unit 2 ???

    He just gave you different names for Van Der Waals forces. The electrons affect London Forces, and thus the more electrons, the stronger the force.
  7. xIshtar

    How is your preperation for Chem Unit 2 ???

    H2 is the correct answer in my eyes.
  8. xIshtar

    How is your preperation for Chem Unit 2 ???

    London Forces are the forces resulting from the uneven distribution of electrons. This means that it causes temporary dipoles, which then results in induced dipoles. Hmm.. An example :S
  9. xIshtar

    How is your preperation for Chem Unit 2 ???

    Hmm. Whoa, oops, I got them the wrong way round, yeah you're totally right :)
  10. xIshtar

    How is your preperation for Chem Unit 2 ???

    Induced dipoles result from London Forces.
  11. xIshtar

    How is your preperation for Chem Unit 2 ???

    When thinking about reason, it's usually because of maximum repulsion, which results in the value being the minimum separation.
  12. xIshtar

    How is your preperation for Chem Unit 2 ???

    Hydrogen bonding is always 180 degrees, yes.
  13. xIshtar

    How is your preperation for Chem Unit 2 ???

    A decrease in pressure, means there are a smaller number of particles per unit volume, and this then means that the rate and amount of collisions that are successful is slower, and thus the reaction slows down.
  14. xIshtar

    How is your preperation for Chem Unit 2 ???

    Minimum seperation, maximum replusion I think. Not sure though :/
  15. xIshtar

    How is your preperation for Chem Unit 2 ???

    No problem, good luck today :)
  16. xIshtar

    How is your preperation for Chem Unit 2 ???

    Hydrogen bonds are the strongest intermolecular forces. In comparison to bromine, Chlorine is the stronger oxidising agent, which can be deduced from the converse of it being the weaker reducing agent, this means that it is less likely to give up its electrons and return into chlorine molecules :)
  17. xIshtar

    How is your preperation for Chem Unit 2 ???

    Group one elements are always (+1) Oxygen is generally (-2) And thus, Carbon in K2CO3 is (+4) Carbon in CO2 is (+4) and Oxygen is (-2) Hydrogen in H20 is (+1) and Oxygen is (-2) In KHCO3, as K is (+1) and O is (-2), hydrogen is (+1) and thus carbon is again (+4) I don't really get it :P
  18. xIshtar

    How is your preperation for Chem Unit 2 ???

    HCl is not strong enough to reduce the H2SO4, and thus it means that chlorine is not produced. On the other hand, as HBr is strong enough to reduce the H2SO4, Bromine is produced. Water has a higher boiling point as it can form 2 hydrogen bonds.
  19. xIshtar

    How is your preperation for Chem Unit 2 ???

    Actually, it is because HCl is a weaker reducing agent, and thus this means that a redox reaction does not take place, and Cl2 is not formed.
  20. xIshtar

    :P

    :P
    • xIshtar
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