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    Hi, I'm not sure about the answers to these questions so any help would be appreciated

    1 Propan-2-ol can be formed by the hydration of an alkene in the presence of a catalyst. Suggest a suitable catalyst for this reaction.
    I guessed phosphorus but I'm not sure if that's the right answer.
    2 Leaf alcohol reacts with bromine. State what you would see when bromine reacts with leaf alcohol.
    3 Write a balanced equation for the conversion of ethene into ethanol. State the essential conditions.
    I guessed the equation would be:
    C2H4(g) + H2O(g) ---> C2H5OH(l)
    but I'm not sure what the conditions would be.
    4 State the problem associated with the combustion of polymers such as PVC.
    5 State two ways in which chemists are trying to minimise the damage to the environment caused by the disposal of halogenated plastics such as PVC.

    Thanks in advance!
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    (Original post by cassie05)
    Hi, I'm not sure about the answers to these questions so any help would be appreciated

    1 Propan-2-ol can be formed by the hydration of an alkene in the presence of a catalyst. Suggest a suitable catalyst for this reaction.
    I guessed phosphorus but I'm not sure if that's the right answer.
    2 Leaf alcohol reacts with bromine. State what you would see when bromine reacts with leaf alcohol.
    3 Write a balanced equation for the conversion of ethene into ethanol. State the essential conditions.
    I guessed the equation would be:
    C2H4(g) + H2O(g) ---> C2H5OH(l)
    but I'm not sure what the conditions would be.
    4 State the problem associated with the combustion of polymers such as PVC.
    5 State two ways in which chemists are trying to minimise the damage to the environment caused by the disposal of halogenated plastics such as PVC.

    Thanks in advance!
    1. Phosphoric acid
    2. Not a clue as it's not on my spec
    3. 300 celsius, 60 atm
    4. This is obvious, just think.
    5. Same as above
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    (Original post by cassie05)
    2 Leaf alcohol reacts with bromine. State what you would see when bromine reacts with leaf alcohol.
    i.e. (Z)-hex-3-en-1-ol
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    (Original post by cassie05)
    Hi, I'm not sure about the answers to these questions so any help would be appreciated
    Hey!

    Okay, let's see what we can do.

    (Original post by cassie05)
    1 Propan-2-ol can be formed by the hydration of an alkene in the presence of a catalyst. Suggest a suitable catalyst for this reaction.
    This is just a reaction that you need to memorise! Therefore you should have the answer somewhere in your class notes but the catalyst for a hydration reaction is concentrated phosphoric acid.

    (Original post by cassie05)
    I guessed phosphorus but I'm not sure if that's the right answer.
    Close! :yep:

    (Original post by cassie05)
    2 Leaf alcohol reacts with bromine. State what you would see when bromine reacts with leaf alcohol.
    Okay so do you know what a leaf alcohol is? 'Hex-3-en-1-ol' is a type of leaf alcohol. From the IUPAC name, I think you can see that it contains the alkene functional group( I've highlited it for you in bold just in case). Again, the bromine water reaction is another compulsory memorisation type thing so from your unit 2 knowledge you should know that alkenes decolourise bromine water. Therefore the observation when bromine reacts with leaf alcohol is that it changes from orange/brown to colourless.

    (Original post by cassie05)
    3 Write a balanced equation for the conversion of ethene into ethanol. State the essential conditions.
    I guessed the equation would be:
    C2H4(g) + H2O(g) ---> C2H5OH(l)
    but I'm not sure what the conditions would be.

    The balanced equation is right, so well done! The conditions are:

    - High Temperature. (300C)
    - High Pressure. (6.5MPa)
    - Conc. Phosphoric acid catalyst.

    Just remember to learn these!


    (Original post by cassie05)
    4 State the problem associated with the combustion of polymers such as PVC.

    5 State two ways in which chemists are trying to minimise the damage to the environment caused by the disposal of halogenated plastics such as PVC.
    For the last two questions, this website has all the information you need!!

    http://www.bbc.co.uk/schools/gcsebit...olymers2.shtml

    (Original post by cassie05)
    Thanks in advance!
    :borat:
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    Thanks for all the help, it's really appreciated
 
 
 
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