Answered

Welcome to Westonci.ca, where curiosity meets expertise. Ask any question and receive fast, accurate answers from our knowledgeable community. Ask your questions and receive detailed answers from professionals with extensive experience in various fields. Our platform provides a seamless experience for finding reliable answers from a network of experienced professionals.

Consider the redox reaction below:

[tex]\[ \text{Mg}_{(s)} + \text{Fe}^{2+}_{(aq)} \longrightarrow \text{Mg}^{2+}_{(aq)} + \text{Fe}_{(s)} \][/tex]

Which equation is a half reaction that describes the reduction that is taking place?

A. [tex]\[ \text{Fe}^{2+}_{(aq)} + 2e^{-} \longrightarrow \text{Fe}_{(s)} \][/tex]

B. [tex]\[ \text{Mg}_{(s)} \longrightarrow \text{Mg}^{2+}_{(aq)} + 2e^{-} \][/tex]

C. [tex]\[ \text{Fe}^{2+}_{(aq)} \longrightarrow \text{Fe}_{(s)} + 2e^{-} \][/tex]

D. [tex]\[ \text{Mg}_{(s)} + 2e^{-} \longrightarrow \text{Mg}^{2+}_{(aq)} \][/tex]

Sagot :

GinnyAnswer
In the given redox reaction:

[tex]\[ Mg\ (s) + Fe^{2+}\ (aq) \longrightarrow Mg^{2+}\ (aq) + Fe\ (s) \][/tex]

we need to identify the half-reaction that describes the reduction process.

Step-by-Step Solution:

1. Identify the Oxidation States:
- Magnesium (Mg) starts as a solid with an oxidation state of [tex]\(0\)[/tex] and becomes [tex]\(Mg^{2+}\ (aq)\)[/tex], which means it loses 2 electrons ([tex]\(e^-)\)[/tex]. Hence, it is oxidized.
- Iron ([tex]\(Fe^{2+}\)[/tex]) in aqueous state starts with an oxidation state of [tex]\(+2\)[/tex] and becomes solid iron (Fe) with an oxidation state of [tex]\(0\)[/tex], which means it gains 2 electrons. Hence, it is reduced.

2. Write the Reduction Half-Reaction:
- The reduction process involves gaining electrons. Here, iron is being reduced from a [tex]\(+2\)[/tex] state to [tex]\(0\)[/tex].
- The balanced half-reaction for the reduction process can be written as:
[tex]\[ Fe^{2+}\ (aq) + 2e^- \longrightarrow Fe\ (s) \][/tex]

Among the given options, the correct half-reaction describing the reduction process is:
[tex]\[ Fe^{2+}\ (aq) + 2e^- \longrightarrow Fe\ (s) \][/tex]

Thus, the correct equation is:
[tex]\[ Fe^{2+}\ (aq) + 2e^- \longrightarrow Fe\ (s) \][/tex]

This matches the answer option:
[tex]\[ Fe^{2+}\ (aq) + 2e^- \longrightarrow Fe\ (s) \][/tex]
Thanks for stopping by. We are committed to providing the best answers for all your questions. See you again soon. Thanks for using our service. We're always here to provide accurate and up-to-date answers to all your queries. Thank you for visiting Westonci.ca. Stay informed by coming back for more detailed answers.