A vegetable soup recipe requires one teaspoonful of salt. A chef accidentally puts in one tablespoonful. Now the soup is much to
1 answer:
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<u>Answer:</u>
<u>For A:</u> The standard cell potential of the reaction is 4.4 V
<u>For B:</u> The standard Gibbs free energy of the reaction is
<u>For C:</u> The reaction is spontaneous as written.
<u>Explanation:</u>
- <u>For A:</u>
The given chemical reaction follows:
The given half reaction follows:
<u>Oxidation half reaction:</u> ( × 2)
<u>Reduction half reaction:</u>
The substance having highest positive potential will always get reduced and will undergo reduction reaction.
Here, chlorine will undergo reduction reaction will get reduced.
Substance getting oxidized always act as anode and the one getting reduced always act as cathode.
To calculate the of the reaction, we use the equation:
Hence, the standard cell potential of the reaction is 4.4 V
- <u>For B:</u>
Relationship between standard Gibbs free energy and standard electrode potential follows:
where,
n = number of electrons transferred =
F = Faradays constant =
= standard cell potential = 4.4 V
Putting values in above equation, we get:
Hence, the standard Gibbs free energy of the reaction is
- <u>For C:</u>
For a reaction to be spontaneous, the standard Gibbs free energy change of the reaction must be negative.
From above, the standard Gibbs free energy change of the reaction is coming out to be negative.
Hence, the reaction is spontaneous as written.
Answer: 7.8 moles of NaCl result from the complete reaction of 3.9 mol of
Explanation:
To calculate the moles :
As is the excess reagent,
is the limiting reagent as it limits the formation of product.
According to stoichiometry :
1 mole of gives = 2 moles of
Thus 3.9 moles of will give=
of
7.8 moles of NaCl result from the complete reaction of 3.9 mol of