Dorothy798
Answered

Welcome to Westonci.ca, where curiosity meets expertise. Ask any question and receive fast, accurate answers from our knowledgeable community. Get immediate and reliable answers to your questions from a community of experienced professionals on our platform. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.

Given the redox reaction:
Cr3+ + Al-->Cr + Al3+
As the reaction takes place, there is a transfer of
(1) electrons from Al to Cr3+
(2) electrons from Cr3+ to Al
(3) protons from Al to Cr3+
(4) protons from Cr3+ to Al

Sagot :

lulu1991
In this reaction, Al lose electrons and change to Al3+. Cr3+ gain electrons and change to Cr. So the electrons transfer from Al to Cr3+. Protons will not transfer in a chemical reaction. So the answer is (1).

Answer: (1) electrons from Al to [tex]Cr^{3+}[/tex]

Explanation: Oxidation-reduction reaction or redox reaction is defined as the reaction in which oxidation and reduction reactions occur simultaneously.

Oxidation reaction is defined as the reaction in which a substance looses its electrons. The oxidation state of the substance increases.

Reduction reaction is defined as the reaction in which a substance gains electrons. The oxidation state of the substance gets reduced.

For the given reaction:

[tex]Cr^{3+}+Al\rightarrow Cr+Al^{3+}[/tex]

The oxidation state of chromium reduces from +3 to 0, it is getting reduced and gains electrons. The oxidation state of aluminium increases from 0 to +3. Thus, it is getting oxidized and it loses electrons. Thus electrons are transferred from [tex]Al[/tex] to [tex]Cr^{3+}[/tex]

We appreciate your time. Please come back anytime for the latest information and answers to your questions. Thanks for stopping by. We strive to provide the best answers for all your questions. See you again soon. Keep exploring Westonci.ca for more insightful answers to your questions. We're here to help.