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    melvados's Avatar
    melvados Posts: 19, Reputation: 1
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    #1

    Sep 27, 2009, 07:57 PM
    Chemical Equations of zinc and copper + theory qns needed
    Hi all, I'm new here but in need of help in chemical equations and theory. Have tried reading up some books but none have really given what I really wanted.

    1. I am trying to balance the following equations but not sure if its correct, could anyone help me check as it seems weird for me?
    - Zinc + sodium carbonate : Zn + Na2CO3 --> ZnCO3 + Na2?
    - Copper + Sodium carbonate: Cu + Na2CO3 --> CuCO3 + Na2?

    2. I am doing an experiment to see if metals, zinc and copper will react in alkaline solution which is the sodium carbonate solution.
    I know that when such metals reacts in certain solutions, a layer of oxide (zinc /copper oxide) will be formed on the surface of the metal.
    So if I put the metals in sodium carbonate solution, will there be a layer of oxide (zinc oxide or copper oxide) also formed on the surface of the metals?

    If there really is an oxide formed, can I say that this oxide will actually give a weight gain (though the value will be very small) onto these metals if taken for readings?

    Greatly appreciated for any answers/help given. Thanks in advance
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Sep 28, 2009, 08:40 AM

    Already answered here: https://www.askmehelpdesk.com/chemis...ed-400481.html
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