[Answer] In the reaction shown below which substance is oxidized?2 Cr(s) + Fe2O3(aq) → Cr2O3(aq) + 2 Fe(s)

Answer: Cr(s)

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In the reaction shown below which substance is oxidized?2 Cr(s) + Fe2O3(aq) → Cr2O3(aq) + 2 Fe(s) 2 Cr(s) + Fe2O3(aq) → Cr2O3(aq) + 2 Fe(s) Cr(s) The oxidation state on the chromium in Cr2O3 is +3 as there are three oxygen atoms each with a −2 oxidation state. What are the coefficients in front of Br2 and OH in the balanced reaction ? Br2(l) BrO3( aq ) + Br( aq ) A) Br2 = 2 OH = 5. B) Br2 = 1 OH = 2 . C) Br2 = 3 OH = 3. D) Br2 = 1 OH = 6. E) Br2 = 3 OH = 6. 14) The standard cell potential (E°cell) for the voltaic cell based on the reaction below is _____ V. Sn2+ ( aq ) + 2Fe3+ ( aq ) 2Fe2+ ( aq ) + Sn4 ... Cr changes from oxidation number +3 to 0. The Cr2O3 is the oxidizing agent. PART B. Choose the item that correctly describes the oxidizing agent and the reducing agent in the reaction shown . PbS( s ) + 4H2O2( aq ) → PbSO4( s ) + 4H2O(ℓ) A. S changes from oxidation number - 2 to +6. The PbS is the reducing agent. O changes from oxidation number -1 ... Fri Oct 14 2011 · Fe2O3 + 2Al -----> Al2O3 + 2Fe The answer is that Fe2O3 is the oxidizing agent and Al is the reducing agent but I have no clue why. In Fe2O3 does the Fe have a charge of 3 so that 2 (3)=6 which cancels out the fact that for the oxygen 3(- 2 )=-6? I really don't understand how to find the oxidation state of something like iron or aluminum since it' s in the middle of the periodic table. Fe + Sun Feb 02 2020 + + Cr 6 2 O- 2 7 2 -+ H +1 + → Fe +3 3+ + Cr +3 3+ + H +1 2 O- 2 b) I...

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