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103 solutions

Balancing Redox Reactions

Q. Balance the following redox equation, for a reaction that takes place in acidic solution. Co2^2+(aq) + Au^3+(aq) → Au(s) + Co^3+(aq) Answer the following questions to balance the equation. Which species is reduced? a) Co^2+ b) Au^3+

Solved • Nov 14, 2019

Balancing Redox Reactions

Q. Potassium permanganate, KMnO4, is a powerful oxidizing agent. The products of a given redox reaction with the permanganate ion depend on the reaction condition used. In basic solution, the following equation represents the reaction of this ion with a solution containing sodium sulfite: MnO4^-(aq) + SO3^2-(aq) → MnO2(s) +SO4^2-(aq) Since this reaction takes place in basic solution, H2O(l) and OH^-(aq) will be shown in the reaction. Places for these species are indicated by the blanks in the following restatement of the question: MnO4^-(aq) + SO3^2-(aq) + ___ → MnO2(s) + SO4^2-(aq) ___ What are the coefficients of the reactants and products in the balanced equation above? Remember to include H2O(l) and OH^-(aq) in the blanks where appropriate. Your answer should have six terms. Enter the equation coefficients in order separated by commas (e.g., 2, 2, 1, 4, 4, 3). Include coefficients of 1, as required, for grading purposes.

Solved • Oct 12, 2019

Balancing Redox Reactions

Q. In acidic solution, the nitrate ion can be used to react with a number of metal ions. One such reaction is N03^-(aq) + Sn^2+(aq) → NO2(aq) + Sb^4+(aq) Since this reaction takes place in acidic solution, H2O(l) and H+ (aq) will be involved in the reaction. Places for these species are indicated by the blanks in the following restatement of the question. NO3^-(aq) +Sn^2+(aq) + ___ → NO2(aq) + Sn^4+(aq) ___ What are the coefficients of the reactants and products in the balanced equation above? Remember to include H2O(l) and H+(aq) in the appropriate blanks. Your answer should have six terms. Enter the equation coefficients in order separated by commas (e.g., 2, 2, 1, 4, 4, 3). Include coefficients of 1, as required, for grading purposes.

Solved • Oct 12, 2019

Balancing Redox Reactions

Q. 13. The following redox reaction is not balanced. Using the half reaction method, balance the following redox reaction under basic conditions: Zn(s) + NO3^-(aq) → Zn(OH)4^2-(s) + NH3(aq)

Solved • Oct 11, 2019

Balancing Redox Reactions

Q. Consider the unbalanced redox reaction: Cr2O2−7(aq)+Cu(s)→Cr3+(aq)+Cu2+(aq) Part A: Balance the equation. Express your answer as a chemical equation. Identify all of the phases in your answer. part B Determine the volume of a 0.775 M K2Cr2O7 solution required to completely react with 3.86 g of Cu. Express your answer using three significant figures.

Solved • Nov 7, 2019

Balancing Redox Reactions

Q. Balance the following equation in basic solution using the lowest possible integers and give the coefficient of water. Cr^3+(aq) + MnO2(s) → Mn^2+(aq) + CrO4^2-(aq) a) 4 b) 1 c) 3 d) 0 e) 2

Solved • Oct 30, 2019

Balancing Redox Reactions

Q. Balance the following equation in acidic solution using the lowest possible integers and give the coefficient of water. CrO4^2-(aq) + Fe^2+(aq) → Fe^3+(aq) + Cr^3+(aq) a) 4 b) 7 c) 5 d) 1

Solved • Oct 30, 2019