Balancing Oxidation-Reduction Equations

Question 1

In the reaction Mg + 2HCl MgCl2 + H2 which element’s oxidation number does not change?

Revolt · Accepted Answer

Cl

Question 2

Given the reaction C + O2 CO2 which pair of reactions represents the two half-reactions?

Revolt · Accepted Answer

Answer image: https://media.edgenuity.com/EVresources/3210-11-03-10-05-task/mc001-2.jpg

Question 3

In the reaction which element is reduced in the reaction?

Revolt · Accepted Answer

O2

Question 4

Which of these is an oxidation half-reaction?

Revolt · Accepted Answer

Answer image: https://media.edgenuity.com/EVresources/3210-11-03-10-07-task/mc001-2.jpg

Question 5

Given the two half-reactions, what must be done in the next step before the reaction can be balanced?

Revolt · Accepted Answer

Show the number of electrons being lost or gained.

Question 6

Given the two half-reactions, what must be done in the next step before the reaction can be balanced? First: upper A u superscript 3 plus right arrow upper A u. Second: upper I superscript minus right arrow Upper I subscript 2. How many electrons are produced/used in this redox reaction when it is balanced?

Revolt · Accepted Answer

6

Question 7

You are given the reaction Cu + HNO3 Cu(NO3)2 + NO + H2O.Which pair of half-reactions represents the balanced half-reactions for the reaction?

Revolt · Accepted Answer

Answer image: https://media.edgenuity.com/EVresources/3210-11-03-10-18-task/mc001-2.jpg

Balancing Oxidation-Reduction Equations Answers

More from this Course

TRY EDGENUITY HACKS