Chemistry, 11.01.2020 02:31 Sawas

Zn(s) is used to reduce other compounds in chemical reactions. if a chemist needs a substance that is more effective in its reducing ability, which of the following species would be the best choice?
a) na
b) h+
c) k+
d) cl−

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Answer from: dogsarecute278

Sodium element has the highest reducing ability.

Explanation:

Reducing ability of an element is defined as the ability for an element to loose electrons. It helps the other element to gain electrons and thus act as reducing agent.

Reducing agent undergoes oxidation reaction.

The substance having highest positive E^o reduction potential will always get reduced and will undergo reduction reaction. Or, the substance having highest negative E^o reduction potential will always get oxidized and will undergo oxidation reaction.

For the given options:

Option A: Sodium

The standard reduction potential of this element will be:

$Na\rightarrow Na^++e^-;E^o_{Na^+/Na}=-2.71V$

Option B: Hydrogen ion

This element cannot loose further electrons. So, now it will gain electrons.

The standard reduction potential of this element will be:

$2H^++2e^-\rightarrow H_2;E^o_{H^+/H_2}=0V$

Option C: Potassium ion

This element cannot loose further electrons. So, now it will gain electrons.

The standard reduction potential of this element will be:

$K^++e^-\rightarrow K;E^o_{K^+/K}=2.93V$

Option D: Chlorine ion

The standard reduction potential of this element will be:

$Cl_2+2e^-\rightarrow 2Cl^-;E^o_{Cl_2/Cl^-}=1.36V$

As, the standard reduction potential of sodium element is more negative, it will act as reducing agent.

Hence, sodium element has the highest reducing ability.

Answer from: Quest

For cyclohexane compounds drawn in a chair conformation: -axial bonds are vertical -equatorial bonds are parallel to two bonds within the ring. thus, as i assume the chair conformation is drawn: -the x group is in an axial position, as are the five other vertical bonds. -three axial bonds are on the top face of the ring -the other three axial bonds are on the bottom face the position of the second substituent on each ring carbon is equatorial. gauche groups must be on an adjacent carbon such as carbon 6 and carbon 2, and also gauche groups are rotated by 60 degrees relative to each other. drawing the newman projections for c1–c2 and c1–c6 aids in visualizing the groups that are gauche to the y group on c1. click this link and watch some academic videos that may you more understand the topic

Answer from: Quest

the answer is d. 74.02

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Zn(s) is used to reduce other compounds in chemical reactions. if a chemist needs a substance that i...

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