II and V II, III and V II, IV and V III, IV, and V What is the coefficient of the permanganate ion when the following equation is balanced? MnO4- + Br - + Br2 (acidic solution) →Mn2+ 1 2 3 5 4 What is the coefficient of the dichromate ion when the following equation is balanced? Fe2+ + Cr2O72- Fe3+ + Cr3+ (acidic solution) → 1 2 3 5 6 What is the coefficient of Fe3+ when the following equation is balanced? CN- + Fe3+ + Fe2+ (basic solution) →CNO- 1 2 3 4 5 Balance the half-reaction, H2S S8, taking in acidic media. How many electrons are needed → to balance the half reaction? 12 electrons, left side 16 electrons, right side 14 electrons, left side 6 electrons, side 8 electrons, right side Balance the half-reaction, C8H10 C8H4O42, taking place in basic media. How many electrons are → needed to balance the half reaction? 4 electrons, left side 8 electrons, right side 8 electrons, left side 12 electrons, left side
II and V II, III and V II, IV and V III, IV, and V What is the coefficient of the permanganate ion when the following equation is balanced? MnO4- + Br - →Mn2+ + Br2 (acidic solution) 1 2 3 5 4 What is the coefficient of the dichromate ion when the following equation is balanced? Fe2+ + Cr2O72- → Fe3+ + Cr3+ (acidic solution) 1 2 3 5 6 What is the coefficient of Fe3+ when the following equation is balanced? CN- + Fe3+ →CNO- + Fe2+ (basic solution) 1 2 3 4 5 Balance the half-reaction, H2S → S8, taking in acidic media. How many electrons are needed to balance the half reaction? 12 electrons, left side 16 electrons, right side 14 electrons, left side 6 electrons, side 8 electrons, right side Balance the half-reaction, C8H10 → C8H4O42, taking place in basic media. How many electrons are needed to balance the half reaction? 4 electrons, left side 8 electrons, right side 8 electrons, left side 12 electrons, left side