Draw the resonance structures for the conjugate base of Phenol (C6H6O). In one sentence, explain why phenol (C6H6O) has a pKa of
10 while cyclohexanol (C6H12O) has a pKa of 16
1 answer:
Answer:
The four resonance structures of the phenoxide ion are shown in the image attached
The conjugate base of cyclohexanol has only one resonance contributor, while
the conjugate base of phenol has four resonance contributors.
Explanation:
In organic chemistry, it is known that structures are more stable if they possess more resonance contributors. The greater the number of contributing canonical structures, the more stable the organic specie. Since the phenoxide ion has four contributing canonical structures, it is quite much more stable than cyclohexanol having only one contributing structure to its conjugate base. Hence the PKa(acid dissociation constant) of phenol is lesser than that of cyclohexanol. The conjugate base of phenol is stabilized by resonance.
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<h2>Answers to the rest of the assignment:</h2>
**Check for proof photos at the bottom.**
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Identify each of the following mixtures as either homogeneous or heterogeneous and as a solution, a suspension, or a colloid.
Cranberry juice at the store
A. homogeneous
C. solution
Smoke
B. heterogeneous
D. colloid
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Identify each of the following mixtures as either homogeneous or heterogeneous and as a solution, a suspension, or a colloid.
Blood
B. heterogeneous
E. suspension
Salad dressing
B. heterogeneous
E. suspension
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Shown here is a person shaving. Under magnification, the shaving foam might look like the image above the shaver. What type of mixture does the foam demonstrate? Give your reasoning.
Foam is a colloid. Colloids includes gas dispersed in a liquid and it also includes gas dispersed in a solid
On the next slide, you can select any answers you want, or you can select nothing. There's no wrong answer.
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A student squeezes several oranges to make a glass of orange juice. The juice contains pieces of orange pulp mixed with the juice. Explain why this drink can be considered a combination of a suspension and a solution.
The juice contains sugars, plant pigments, and other chemicals dissolved in water. This is a solution. The pieces of orange pulp will rise to the top or settle to the bottom of the juice if it is allowed to sit. The pieces of pulp mixed with the juice form a suspension
On the right side, you can also select any answers or none at all. There is no wrong answer.
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<h2>Explanation:</h2>There are two main types of mixtures, homogeneous mixtures and heterogeneous mixtures. The components of a homogeneous mixture are evenly distributed throughout the mixture. The properties of a mixture are the same everywhere. The components of a heterogeneous mixture are not evenly distributed. Different regions of this mixture have different properties.
Particles in a homogeneous mixture do not settle down or separate when left alone. Particles in a heterogeneous mixture eventually separate or settle when left alone.
- Colloids are a type of heterogeneous mixture that do not naturally settle out quickly, and can be separated with different methods.
- A suspension is another type of heterogeneous mixtures in which the components of the mixture will quickly settle out or can be filtered or separated.
Here are photos of Edge just incase.