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ohaa [14]
2 years ago
15

A voltaic cell is constructed with an Fe/Fe²⁺ half-cell and an Mn/Mn²⁺ half-cell. The iron electrode is positive.(a) Write balan

ced half-reactions and the overall cell reaction.
Chemistry
1 answer:
jarptica [38.1K]2 years ago
6 0
<h3>Redox Half reaction</h3>

At cathode

Mn^+2 + 2e- → Mn                      (reduction)

At anode

Fe → Fe^+2  + 2e-                        (oxidation)

<h3>Overall reaction</h3>

Mn^+2  + Fe → Mn + Fe

<h3>How can one determine whether a reaction is a redox in nature?</h3>

1) Identify the reducing and oxidizing agents. To do this, we must determine their oxidation numbers.2) For oxidation and reduction, write half-reactions. To equalize the charges on both sides, we use electrons. Get the redox reaction, third. (1) and (2) can be combined to produce the redox reaction. The balanced redox reaction shouldn't have any electrons from the half-reactions.

<h3>What does the term "redox reaction" mean?</h3>

One species is reduced and another is oxidized in redox reactions. As a result, the species in question must shift in oxidation state. These reactions play a crucial role in the production and usage of energy in a variety of living systems, including humans and energy storage devices (batteries).

Learn more about redox reaction here:-brainly.com/question/28023605

#SPJ4

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Answer:

             Number of Protons  =  19

             Number of Neutrons  =  25

             Number of Electrons  =  19

Explanation:

Number of Protons:

                               The number of protons present in any atom are equal to the atomic number of that particular atom. Hence, as the atomic number of Potassium is 19 therefore, it contains 19 protons.

Number Neutrons:

                             The number of neutrons present in atom are calculated as,

                               # of Neutrons  =  Atomic Mass - # of protons

As given,

                                Atomic Mass  =  43

                                # of Protons  =  19

So,

                                # of Neutrons  =  43 - 19

                                # of Neutrons  =  24

Number of Electrons:

                                   As we know for a neutral atom the number of electrons are exactly equal to the number of protons present in its nucleus. So, for 19 protons in neutral Potassium atom there must be 19 electrons.

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