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3 years ago

HELP!! 50 POINTS! PLEASE ANSWER AND EXPLAIN WHY:

Chemistry

1 answer:

Vikki [24]3 years ago

8 0

Answer:

The correct set of measurement is D

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Under standard-state conditions, which of the following species is the best reducing agent? a. Ag+ b. Pb c. H2 d. Ag e. Mg2+

eimsori [14]

Answer: The correct answer is Option b.

Explanation:

Reducing agents are defined as the agents which help the other substance to get reduced and itself gets oxidized. They undergo oxidation reaction.

$X\rightarrow X^{n+}+ne^-$

For determination of reducing agents, we will look at the oxidation potentials of the substance. Oxidation potentials can be determined by reversing the standard reduction potentials.

For the given options:

Option a: $Ag^+$

This ion cannot be further oxidized because +1 is the most stable oxidation state of silver.

Option b: $Pb$

This metal can easily get oxidized to $Pb^{2+}$ ion and the standard oxidation potential for this is 0.13 V

$Pb\rightarrow Pb^{2+}+2e^-;E^o_{(Pb/Pb^{2+})}=+0.13V$

Option c: $H_2$

This metal can easily get oxidized to $H^{+}$ ion and the standard oxidation potential for this is 0.0 V

$H_2\rightarrow 2H^++2e^-;E^o_{(H_2/H^{+})}=0.0V$

Option d: $Ag$

This metal can easily get oxidized to $Ag^{+}$ ion and the standard oxidation potential for this is -0.80 V

$Ag\rightarrow Ag^{+}+e^-;E^o_{(Ag/Ag^{+})}=-0.80V$

Option e: $Mg^{2+}$

This ion cannot be further oxidized because +2 is the most stable oxidation state of magnesium.

By looking at the standard oxidation potential of the substances, the substance having highest positive $E^o$ potential will always get oxidized and will undergo oxidation reaction. Thus, considered as strong reducing agent.

From the above values, the correct answer is Option b.

8 0

3 years ago

Would be glad if you helped me!

Sindrei [870]

A) Fe⁰ ----> Fe⁺³ +3e⁻ oxidation | *2
b) Cu⁺² + 2e⁻ -----> Cu⁰ reduction |*3

c) 2Fe⁰ +3Cu⁺² -----> 2Fe⁺³ + 2Cu⁰

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3 years ago

The diagram below shows three stages in the water cycle. Condensation -----> 1----->2 Which statement is correct for the d

Allushta [10]

It is d I think best of luck

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4 years ago

Read 2 more answers

If you were asked to convert 4.2 × 1022 atoms of aluminum to moles, which of the following should you use for the conversion?

DanielleElmas [232]

4.2×1022NA N_{A} is the avagadro number

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3 years ago

What happens in a chemical change that does not occur in a physical change?

Andrej [43]

Answer:

In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition. Although we call them physical "reactions," no reaction is actually occurring.

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3 years ago