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    Hey guys. How was the paper. Please share answers
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    I found is it q bit challenging...didnt expect to see some types of questions there 😅
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    (Original post by ecclesia chong)
    I found is it q bit challenging...didnt expect to see some types of questions there 😅
    I think I messed up the maximum temperature rise. Do you think they’ll give an error carried forward mark for the enthalpy change we had to find using the temp rise?
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    (Original post by ecclesia chong)
    I found is it q bit challenging...didnt expect to see some types of questions there 😅
    What did you write for the purpose of releasing pressure? And use of NaCl?
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    haha I killed a few brain cells trying to think of an answer😅 for NaCl I said it neutralizes the acid? not sure of its correct. for the pressure I just said to maintain the pressure inside at 1 atm...like I said, the paper was quite challenging....😅
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    (Original post by ecclesia chong)
    haha I killed a few brain cells trying to think of an answer😅 for NaCl I said it neutralizes the acid? not sure of its correct. for the pressure I just said to maintain the pressure inside at 1 atm...like I said, the paper was quite challenging....😅
    It sure was 😭
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    hi guys.... Can anyone match answer with me for mass of 2-chloropropan..i.e last question
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    question 2 X is probably C2H4...structural formula CH2OHCH2OH...then heat under refux condenser drawing.... question 3.. max temperature rise 13.5C and enthalpy may be -367kj/mol like this one...mass of last questionis 16.8g
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    (Original post by prodhan100)
    hi guys.... Can anyone match answer with me for mass of 2-chloropropan..i.e last question
    Could you tell what you got for the mass? I can’t remember exactly. I might remember what I wrote if I see your answr.
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    What was the test for water and oxygen? What would you see?
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    (Original post by ecclesia chong)
    haha I killed a few brain cells trying to think of an answer😅 for NaCl I said it neutralizes the acid? not sure of its correct. for the pressure I just said to maintain the pressure inside at 1 atm...like I said, the paper was quite challenging....😅
    Wasn't NaCl used to separate mixture into two layers?
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    Thank god! I got 16.83g
    (Original post by prodhan100)
    question 2 X is probably C2H4...structural formula CH2OHCH2OH...then heat under refux condenser drawing.... question 3.. max temperature rise 13.5C and enthalpy may be -367kj/mol like this one...mass of last questionis 16.8g
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    (Original post by funkypineapple)
    What was the test for water and oxygen? What would you see?
    I wrote cobalt(ii) chloride paper turns pink from blue for water
    Oxygen relights a glowing splint
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    (Original post by funkypineapple)
    What was the test for water and oxygen? What would you see?
    For water you add anhydrous copper sulphate. Goes from white to blue. And then for oxygen you hold a glowing splint to the gas. It lights up
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    (Original post by funkypineapple)
    Wasn't NaCl used to separate mixture into two layers?
    I have no idea.... maybe I didnt read the question properly? idk, but exam over liao so IM FREEEEEEE
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