What are the steps of the Half-reaction method for Balancing redox Reactions?

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  • 1.) The number is a positive or negative number assigned to an atom according to a set of arbitrary rules. 2.) The method is a method of balancing redox reactions by balancing the oxidation and reduction half-reactions. 3.) ____ ions are those ions that do not change oxidation number or composition during a reaction. 4.) Among the following, which is an oxidation-reduction reaction? A. Na2S + CaCO3 → CaS + Na2CO3 B. 2HNO3 + Mg(OH)2 → Mg(NO3)2 + 2H2O C. H2 + F2 → 2HF D. 3Ba(OH)2 + 2H3PO4 → Ba3(PO4)2 + 6H2O 5.) When the equation HCl + MnO2 → MnCl2 + H2O + Cl2 is balanced, what is the coefficient for HCl? A. 1 B. 2 C. 3 D. 4 6.) _____ reaction is another name for an oxidation-reduction reaction. 7.) What is the usual oxidation number of oxygen in a compound? A. –1 B. –2 C. +1 D. +2 8.) _______ is the complete or partial loss of electrons or the gain of oxygen.

  • Answer:

    4 D 5C 6red ox 7D 8Oxidation

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1.oxidation 2 3. spectator 4 B 5 6 redox 7 b 8 oxidation

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