posted by .

Can anyone give me a brief explanation about redox? I'm just not understanding any of it. How do you know if a reaction is redox or non do you know what would be reduced? I am just confused with the redox subject. Any direction?

  • chemistry -

    If you are that confused you need to read more about redox. Here are some things to memorize about redox.
    Oxidation is the loss of electrons.
    Reduction is the gain of electrons.
    (There is a mnemonic aid for this. It is Leo goes grr. From the word Leo, loss of electrons oxidation. OK?). I NEVER tried to remember the definition of oxdn AND reduction because that way I always mixed them up. So I remember ONE of them, namely, that oxidn is the loss of electrons. Then I know reduction must be the opposite. So when you write the half equation, adding electrons is reduction and losing them is oxidation. Now, how do you know what is oxidized and what is reduced. You can tell by the change in oxidation state. Do you know the rules? Here is a simple set.
    (Broken Link Removed)

    Here is a simple equation.
    C + O2 ==> CO2.
    The oxidation state of C changes from zero on the left to +4 on the right. That means it must have lost 4 electrons which means C was oxidized. Oxygen changes from zero on the left to -2 (for each of them) on the right which means oxygen gained two electrons for each atom of oxygen and that makes oxygen reduced. One set that often confuses students is oxidizing agent and reducing agent. Again, I NEVER memorized EITHER of them. One I know what is oxidized, I immediately know it is the reducing agent. So the "other material" must be reduced and be the oxidizing agent.
    I hope this gets you started. Post again if you still have trouble after digesting this information.

  • chemistry -

    Thanks. You broke it down so much better than my professor. :)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    In the reaction of AL metal with aqueous potassium hydroxide, what type of reaction is occurring?
  2. Chemistry

    NH3(g) + 202(g) = HNO3(aq) +H2O (l) Is this reaction a combination, decomposition, single replacement, double replacment or other?
  3. Chemistry

    Label the following reactions as combination, decomposition, displacement, precipitation, or acid-base reaction. Also whether each reaction is a redox or non redox reaction. SO2(g)+H2O(l)-> H2SO3(aq) NH3(aq)+HS(-)(aq)-> NH4(+)(aq)+S(2-) …
  4. Chemistry

    Please help me verify: The following reactions are involved in the formation of acid rain. Use oxidation numbers to identify which of these reactions are REDOX reactions. a. 2SO2(g) + O2(g) �� 2SO2(g) -2 -2 0 -2 -2 No …
  5. Chemistry

    Use oxidation numbers to identify if this reaction is REDOX reactions. SO2(g) + H2O(l) -> H2SO3(aq) for oxidation #s I got: SO2 = -2 for the S = -2 for the o2 H20 = +1 for H2 = -2 for O --> H2SO = +1 for H2 = -2 for S = -2 for …
  6. Chemistry

    what are redox/non-redox not getting it? Can you break it down?
  7. Chemistry

    Classify each of the following as a redox reaction or a non-redox reaction. Zn+CuCl2 -> ZnCl2+Cu HCl+NaOH -> H2O+NaCl 2CO+O2 -> 2CO2 SO3+H2O -> H2SO4
  8. AP Chemistry

    redox reaction: Hydrogen peroxide is added to an acidified solution of potassium permanganate. what is the total redox reaction?
  9. Chemistry

    Complete and balance the equation for this reaction in basic solution?
  10. Chemistry

    Is the decomposition of lead(ii)nitrate a redox reaction?

More Similar Questions