Hey there! Sign in to join this conversationNew here? Join for free

January Edexcel Chemistry IAL Unit 1 2016 (Thread) Watch

Announcements
    Offline

    3
    ReputationRep:
    (Original post by Zeekay98)
    What was the number of ions of Calcium in one mole of Calcium Hydroxide?
    And the number of electrons in one mole of OH- ion?
    3 of moles of ions in 1 mol of Ca(OH)2

    and 10 mols of electrons in 1 mol of OH- ion.
    Offline

    3
    ReputationRep:
    (Original post by SAM RR)
    Can someone tell me apart from dispersion force are there any more inter molecular forces on iodine mono chloride? And how did you guys drew the LCL3 ?
    ICl, has additional permanent dipole dipole forces, also it's electron number is greater. etc etc


    ICl3 was like this, as Iodine can expand its d orbital accomodating more then 8 in valence.
    Offline

    1
    ReputationRep:
    (Original post by SaadKaleem)
    3 of moles of ions in 1 mol of Ca(OH)2

    and 10 mols of electrons in 1 mol of OH- ion.
    And what was the number of moles of iodine and bromine in the last question?
    Offline

    3
    ReputationRep:
    (Original post by Zeekay98)
    And what was the number of moles of iodine and bromine in the last question?
    I got that question wrong

    but the answer is 0.17 mol of Br2 and 0.33 mol of I2
    Offline

    1
    ReputationRep:
    (Original post by SaadKaleem)
    I got that question wrong

    but the answer is 0.17 mol of Br2 and 0.33 mol of I2
    Ahh crap. I'm definitely losing a lot of marks in section C.
    Since I'm a private candidate, I didn't get to talk to anyone about their paper. But do you know how it was for other people?
    Offline

    3
    ReputationRep:
    (Original post by Zeekay98)
    Ahh crap. I'm definitely losing a lot of marks in section C.
    Since I'm a private candidate, I didn't get to talk to anyone about their paper. But do you know how it was for other people?
    About 15 gave from my centre, they found the paper to be of slight hard difficulty.

    In my opinion, it was an average paper.
    Offline

    1
    ReputationRep:
    (Original post by Raghdaelgedawy)
    Economy was 82 percent and yield was seventy something ( 73.5 i think
    Bulls-eye. Got that on the point matE!
    Offline

    1
    ReputationRep:
    (Original post by SaadKaleem)
    About 15 gave from my centre, they found the paper to be of slight hard difficulty.

    In my opinion, it was an average paper.
    True. I just hope the curve is good. Anyways, thanks for not ignoring my messages! haha
    Offline

    2
    ReputationRep:
    (Original post by SaadKaleem)
    3 of moles of ions in 1 mol of Ca(OH)2

    and 10 mols of electrons in 1 mol of OH- ion.
    Weren't we supposed to multiply avagadros constant with it?
    Offline

    2
    ReputationRep:
    (Original post by Zeekay98)
    True. I just hope the curve is good. Anyways, thanks for not ignoring my messages! haha
    Hey, what was your answer for the h2so4 to so2 equation????
    Offline

    3
    ReputationRep:
    (Original post by elhm18)
    Weren't we supposed to multiply avagadros constant with it?
    No, it said 'mol' of electrons, not 'number' of electrons.
    Offline

    3
    ReputationRep:
    (Original post by elhm18)
    Hey, what was your answer for the h2so4 to so2 equation????
    You mean Sulfuric Acid (and KI) to Sulfur Ionic equation?
    Offline

    0
    ReputationRep:
    (Original post by Zeekay98)
    Ahh crap. I'm definitely losing a lot of marks in section C.
    Since I'm a private candidate, I didn't get to talk to anyone about their paper. But do you know how it was for other people?
    Dont worry my exam was pretty crap. Section C and then a few of Section B. You want to discuss them?
    Offline

    3
    ReputationRep:
    (Original post by dnac5)
    Dont worry my exam was pretty crap. Section C and then a few of Section B. You want to discuss them?
    What was the question regarding the Ionic equation? on the 2nd page of section C, i forgot.
    Offline

    0
    ReputationRep:
    (Original post by SaadKaleem)
    What was the question regarding the Ionic equation? on the 2nd page of section C, i forgot.
    It was the equation for potassium iodide and sulfuric acid. and then you had to give an ionic equation on how sulfur is produced from H2SO4. BUT then i went and looked in my book after the exam, and suprisingly it said that the equation of KI and H2SO4 is not required for A-Level, so my teacher is submitting a complaint.
    Did you get the dot and cross diagram for ICL3 right?
    and what about that question of the preparation of the CACO3 from CaOH?
    Offline

    1
    ReputationRep:
    (Original post by dnac5)
    Dont worry my exam was pretty crap. Section C and then a few of Section B. You want to discuss them?
    Well for me section B was pretty good except I might've messed up the CaCO3 decomposition question a bit.
    Section C started off fine but then the rest of the questions were weird.
    I really think we should leave this here & focus on the remaining ones! haha
    Fingers crossed! Hope the curve is good
    Offline

    0
    ReputationRep:
    (Original post by Zeekay98)
    Well for me section B was pretty good except I might've messed up the CaCO3 decomposition question a bit.
    Section C started off fine but then the rest of the questions were weird.
    I really think we should leave this here & focus on the remaining ones! haha
    Fingers crossed! Hope the curve is good
    Ive got only my unit 3 left, fingers crossed for that one
    Offline

    1
    ReputationRep:
    (Original post by dnac5)
    Ive got only my unit 3 left, fingers crossed for that one
    Oh same!
    Since this unit is all based on Unit 1 & 2 practicals, I couldn't find any sort of revision notes for this.
    How are you revising?
    Offline

    3
    ReputationRep:
    (Original post by dnac5)
    It was the equation for potassium iodide and sulfuric acid. and then you had to give an ionic equation on how sulfur is produced from H2SO4. BUT then i went and looked in my book after the exam, and suprisingly it said that the equation of KI and H2SO4 is not required for A-Level, so my teacher is submitting a complaint.
    Did you get the dot and cross diagram for ICL3 right?
    and what about that question of the preparation of the CACO3 from CaOH?
    Yes, I got the ICl3 right, i posted above.

    For the ionic equation, i wrote this:

    H2SO4 + 6H+ + 6e- --> 4H2O + S

    ---

    Prep of slaked lime (Ca(OH2) from CaCO3 (Two stages)

    I wrote, CaCO3 --> CaO + CO2 and CaO + H2O --> Ca(OH)2 and high temp condition etc.
    Offline

    0
    ReputationRep:
    (Original post by Zeekay98)
    Oh same!
    Since this unit is all based on Unit 1 & 2 practicals, I couldn't find any sort of revision notes for this.
    How are you revising?
    I studied for it last year, im just re sitting it as i got a B, and im trying to get a higher grade. I studied from the Unit 3 & & edexcel book. But I did notes on them, if you want them, they're hand written though :/ Any questions i can help you wit, as i have a bit of experience on it
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Break up or unrequited love?
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Quick reply
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.