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

    13
    ReputationRep:
    (Original post by z_o_e)
    Not sure...
    This is what I think...though if anyone wants to add stuff to it then feel free:

    Aluminium extraction takes a lot of energy and money to extract from the ore, so recycling would be cheaper and easier ( uses relatively less energy).
    Gold is too precious and extraction is too expensive so recycling would be the best option.
    Offline

    13
    ReputationRep:
    Explain why a substance needs to be either in a solution or molten for electrolysis to work?
    • Thread Starter
    Offline

    11
    ReputationRep:
    (Original post by Dizgurl)
    Explain why a substance needs to be either in a solution or molten for electrolysis to work?
    because the ions are free to move and they are negative?
    Offline

    13
    ReputationRep:
    (Original post by z_o_e)
    because the ions are free to move and they are negative?
    Yeah

    Molten substances get ionised to conduct electricity and help electrolysis. It would need to be molten for the metal ions to travel across the electrolyte to the cathode as well
    Offline

    2
    ReputationRep:
    Biofuels are carbon neutral. (Better for environment compared to Fossil Fuels)
    Hydrocarbons are chains of Hydrogen and Carbon bonded together.
    Copper is very good for conducting electricity.


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    The substance needs to be either molten or in a liquid state to allow the ions to move and go to the anode (metal ions) and cathode (hydroxide ions or the other substance in the solution/molten material. Also allows the electrons to form a full circuit


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    Question for you guys!

    What's a Emulsifier, how does it work and name an example of one! 😄


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by Dizgurl)
    Why do we recycle gold and Aluminium?
    We recycle aluminium to save energy as it must be extracted with electrolysis so it saves money. Not sure about gold.

    Why is argon used in a reactor with titanium and not oxygen?
    Offline

    13
    ReputationRep:
    (Original post by alyxgower)
    We recycle aluminium to save energy as it must be extracted with electrolysis so it saves money. Not sure about gold.

    Why is argon used in a reactor with titanium and not oxygen?
    Because oxygen may react with titanium to produce titanium oxide. Argon is unreactive so it will not form a compound with Titanium.
    Offline

    13
    ReputationRep:
    (Original post by dausa99)
    Question for you guys!

    What's a Emulsifier, how does it work and name an example of one! 😄


    Posted from TSR Mobile
    An emulsifier is a substance that prevents two immiscible substances from separating. Egg yolk is an emulsifier
    Offline

    2
    ReputationRep:
    (Original post by Dizgurl)
    An emulsifier is a substance that prevents two immiscible substances from separating. Egg yolk is an emulsifier
    👏🏼


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by Dizgurl)
    Why do we recycle gold and Aluminium?
    We recycle Aluminium and Gold as it's cheaper and more Eco friendly to do so. Mining the limited ores (another reason why to recycle), transporting them, mixing bauxite to make the the MP lower (In Aluminium) and then undergoing electrolysis releases a lot of CO2/S04 into the atmosphere polluting it as well costing a lot of money.


    Posted from TSR Mobile
    Offline

    16
    ReputationRep:
    These are the conditions used in the industrial manufacture of ammonia:

    Pressure: 200 atmospheres
    Temperature: 450 degrees celsius
    Catalyst: Iron

    Why are these conditions used? Why don't we increase the temperature or atmosphere?


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by z_o_e)
    Yepp and do not react with water.

    Q) What is a mixture?

    Posted from TSR Mobile
    A mixture is two or more elements that are physically (not chemically, no bonds formed between the two) mixed together (they can also be separated physically too)


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by DamnDaniel2)
    These are the conditions used in the industrial manufacture of ammonia:

    Pressure: 200 atmospheres
    Temperature: 450 degrees celsius
    Catalyst: Iron

    Why are these conditions used? Why don't we increase the temperature or atmosphere?


    Posted from TSR Mobile
    If you were to change the atmospheric pressure or change the temperature at which the reaction was taking place it wouldn't give ammonia gas?


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by alyxgower)
    Why can limestone be used to neutralise acidic soil?
    Limestone is alkali (has a high pH) meaning that it's OH– Ions can help neutralise the H+ ions in the very acidic soil.


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by Anmol_.)
    Name one property of a short molecule
    One property of a short molecule is that it's much more flammable. It's also got a lower BP and isn't viscous.


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    Question: why do we harden unsaturated oils?


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    Another one 😂: Why do we use catalysts in these chemical reactions? Also, give one example of a smart polymer and how it aids human life!


    Posted from TSR Mobile
    Offline

    13
    ReputationRep:
    (Original post by dausa99)
    Question: why do we harden unsaturated oils?


    Posted from TSR Mobile
    To make it solid at room temperature?
 
 
 
Poll
Do you agree with the PM's proposal to cut tuition fees for some courses?

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

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