Consider the following weak acids and their Ka values: Acetic Acid Ka = 1.8×10^−5 Phosphoric Acid Ka = 7.5×10^−3 Hypochlorous Ac
1 answer:
You might be interested in
<h2>Acetic Acid + Sodium ethoxide ⇄ Butyric Acid + Sodium Hydroxide</h2>
Explanation:
An ionic equation for the reaction of acetic acid with sodium ethoxide is as follows -
- Reactants -
Acetic Acid and Sodium ethanolate (sodium ethoxide)
- Products -
Butyric Acid and Sodium hydroxide
Hence,
Acetic Acid + Sodium ethoxide ⇄ Butyric Acid + Sodium Hydroxide
⇄
- Weak acids and bases have low energy than strong acids and bases.
- The chemical equilibria shift the reaction side with the species having lower energy.
- Given reaction is an acid-base reaction in which the equilibrium favors the starting material that means it will go to the side of the weakest acid that is acetic acid is weaker than butyric acid.
<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:
<h2>117.94 moles</h2>Explanation:
To find the number of moles in a substance given it's number of entities we use the formula
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
We have the final answer as
<h3>117.94 moles</h3>Hope this helps you