02 HW - Half Reactions

02 HW - Half Reactions - Name Date WKST#23 Redox...

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Name: _________________________________________ Date: ____________ WKST #23: Redox Half-Reactions (40 points) Period: ___________ 1. Oxidation is the _____________ of electrons. 2. Reduction is the _____________ of electrons. 3. The oxidizing agent is _________________ in a chemical reaction. 4. The reducing agent is _________________ in a chemical reaction. 5. For each REDOX reaction below: Provide the oxidation state of each element in the reaction Write the half-reaction for both the oxidation and reduction reaction Label the oxidizing agent and the reducing agent a. Cu (s) + 2 AgNO 3 (aq) Cu(NO 3 ) 2 (aq) + 2 Ag (s) b. H 2 (g) + HNO 3 (g) H 2 O (g) + HNO 2 (g) c. 2 Ni(NO 3 ) 2 (aq) + Sn (s) Sn(NO 3 ) 4 (aq) + 2 Ni (s) d. 4Fe (s) + 3O 2 (g) → 2 Fe 2 O 3 (s)
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1. What is the oxidation number of chromium in K 2 Cr 2 O 7 ? a. +6 c. +2 b. +12 d. +7 2. What is the oxidation number assigned to manganese in KMnO 4 ? a. +2
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02 HW - Half Reactions - Name Date WKST#23 Redox...

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