on the information below. a student constructs an electrochemical cell during a laboratory investigation…

on the information below. a student constructs an electrochemical cell during a laboratory investigation. when the switch is closed, electrons flow through the external circuit. the diagram and equation below represent this cell and the reaction that occurs. write a balanced half - reaction equation for the oxidation that occurs when the switch is closed. 2al(s) + 3ni²⁺(aq) → 2al³⁺(aq) + 3ni(s)

on the information below. a student constructs an electrochemical cell during a laboratory investigation. when the switch is closed, electrons flow through the external circuit. the diagram and equation below represent this cell and the reaction that occurs. write a balanced half - reaction equation for the oxidation that occurs when the switch is closed. 2al(s) + 3ni²⁺(aq) → 2al³⁺(aq) + 3ni(s)

Answer

Explanation:

Step1: Identify the oxidation - state change

Aluminum goes from 0 in Al(s) to +3 in Al³⁺(aq). Oxidation is the loss of electrons.

Step2: Write the half - reaction

Al(s) loses 3 electrons to form Al³⁺(aq). To balance the charge, we add 3 electrons on the product side. Al(s) → Al³⁺(aq)+ 3e⁻ To balance the overall reaction, we multiply this half - reaction by 2 to match the stoichiometry of the overall reaction. 2Al(s) → 2Al³⁺(aq)+ 6e⁻

Answer:

2Al(s) → 2Al³⁺(aq)+ 6e⁻