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Chemistry!! Please help asap!! Will mark brainiliest!!

1. The half-reaction 2MnO2 + H2O + 2e- Mn2O3 is missing

a. electrons
b. OH- ions
c. Mn2+ ions
d. O2- ions

2. The reaction Mg(s) + 2Ag+ (aq) → Mg2+ (aq) + 2Ag(s) will occur because Mg(s) is

a. a stronger oxidizing agent than Ag(s)
b. a stronger reducing agent than Ag(s)
c. reduced
d. disproportionated

3. After the equation below has been balanced, what will the coefficients of the reactants and products be, in order?
Equation: Fe²⁺ (aq) + MnO₄⁻ (aq) + H⁺ (aq) --> Fe³⁺ (aq) + Mn²⁺ (aq) + H₂O (l)

a. 5, 1, 7, 5, 1, 4
b. 5, 1, 8, 5, 1, 4
c. 1, 1, 2, 1, 1, 4
d. 1, 1, 4, 1, 1, 2

Respuesta :

lazygenius514

Answer:

Part 1.

Option B is correct option.

The half-reaction 2MnO2 + H2O + 2e- Mn2O3 is missing  OH- ions.

Explanation:

Full equation:

                                          2MnO2 + H2O + 2e-  → Mn2O3 + 2OH-

Part 2:

The option B which is Mg is stronger reducing agent than Ag is correct option.

Explanation:

Equation:

                               Mg(s) + 2Ag+ (aq) → Mg2+ (aq) + 2Ag(s)

According to equation Mg converts to Mg+2 which means it gives to electron to reduce Ag. So it act as an reducing agent.

Part 3:

The correct option is B. Which is  5, 1, 8, 5, 1, 4.

Explanation:

Full equation :

                  5 Fe²⁺ (aq) + MnO₄⁻ (aq) + 8 H⁺ (aq) --> 5 Fe³⁺ (aq) + Mn²⁺ (aq) + 4 H₂O (l)




The study of chemicals and bonds is called chemistry. There are different types of elements and these are metals and nonmetals.

The correct answer is mentioned below.

What is oxidizing agent?

  • An oxidizing agent, also known as an oxidant or oxidizer, is a substance that has the ability to oxidize other substances
  • In other words to accept their electrons. Common oxidizing agents are oxygen, hydrogen peroxide, and the halogens

The answer to the first question is as follow:-

  • The half-reaction[tex]2MnO_2 + H_2O + 2e^- Mn_2O_3[/tex] is missing  OH- ions.

The full reaction is as follows:-

[tex]2MnO_2 + H_2O + 2e^- ----> Mn_2O_3 + 2OH^-[/tex]

The answer to the second question is as follow:-

Mg is a stronger reducing agent than Ag is correct

The reaction is as follows:-

[tex]Mg(s) + 2Ag+ (aq) ---> Mg2^+ (aq) + 2Ag(s)[/tex]

According to the equation Mg converts to Mg+2 which means it gives to electron to reduce Ag. So it acts as a reducing agent.

The answer to the third question is option B Which is  5, 1, 8, 5, 1, 4.

The full equation is as follows:-

[tex]5 Fe^{2+} (aq) + MnO_4^- (aq) + 8 H^+(aq) --> 5 Fe^{3+} (aq) + Mn^{2+} (aq) + 4 H_2O (l)[/tex]

Hence, the correct answer is described.

For more information about the reactions, refer to the link:-

https://brainly.com/question/10577996

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