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Sudent Name: EXP #6: PRE-LAB EXERCISE 1. Find the charge (also called oxidation number) of the metal atom in each of the following nstructor Name: polyatomie ions or compounds (hint! Oxygen is always-2). a) dichromate ion, CrO b) chromate ion, Cro c) arsenate ion, AsO 2. Balance the following redox reactions. The second one is broken up into separate oxidation and reduction half reactions in order to assist you (hinr See page I) Orxidation Reduction 3. In the question above, state specifically which elements (individual atoms) are gaining electrons, which are losing electrons, and which are neither gaining nor losing electrons, but simply present because they are necessary to balance the equation. 4. Use your knowledge of polyatomic ions to prove the iron in FAS has a charge of +2 CHE-1251 Expriment 6 Student Namez Instructor Name:
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2. A O 2 2. R +11(-2) =-2. As exidtim at

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