The structure of side chains that react to form the cross-links of protein chains are to be shown and a mechanism for their formation in a weakly acidic solution is to be proposed. Concept introduction: Collagen is a fibrous protein in connective tissue. In the structure of collagen, crosslinks containing alpha and beta-unsaturated aldehydes between protein chains are present. Collagen gives strength and elasticity to skin and replaces dead skin cells.

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Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 22, Problem 22.84SP

Interpretation Introduction

Interpretation:

The structure of side chains that react to form the cross-links of protein chains are to be shown and a mechanism for their formation in a weakly acidic solution is to be proposed.

Concept introduction:

Collagen is a fibrous protein in connective tissue. In the structure of collagen, crosslinks containing alpha and beta-unsaturated aldehydes between protein chains are present. Collagen gives strength and elasticity to skin and replaces dead skin cells.

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A small artisanal cheesemaker is testing the acidity of their milk before it coagulates. During fermentation, bacteria produce lactic acid (K₁ = 1.4 x 104), a weak acid that helps to curdle the milk and develop flavor. The cheesemaker has measured that the developing mixture contains lactic acid at an initial concentration of 0.025 M. Your task is to calculate the pH of this mixture and determine whether it meets the required acidity for proper cheese development. To achieve the best flavor, texture and reduce/control microbial growth, the pH range needs to be between pH 4.6 and 5.0. Assumptions: Lactic acid is a monoprotic acid H H :0:0: H-C-C H :0: O-H Figure 1: Lewis Structure for Lactic Acid For simplicity, you can use the generic formula HA to represent the acid You can assume lactic acid dissociation is in water as milk is mostly water. Temperature is 25°C 1. Write the K, expression for the dissociation of lactic acid in the space provided. Do not forget to include state symbols.…

Answer 2

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Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 22, Problem 22.84SP

Interpretation Introduction

Interpretation:

The structure of side chains that react to form the cross-links of protein chains are to be shown and a mechanism for their formation in a weakly acidic solution is to be proposed.

Concept introduction:

Collagen is a fibrous protein in connective tissue. In the structure of collagen, crosslinks containing alpha and beta-unsaturated aldehydes between protein chains are present. Collagen gives strength and elasticity to skin and replaces dead skin cells.

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Answer 3

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 22, Problem 22.84SP

Interpretation Introduction

Interpretation:

The structure of side chains that react to form the cross-links of protein chains are to be shown and a mechanism for their formation in a weakly acidic solution is to be proposed.

Concept introduction:

Collagen is a fibrous protein in connective tissue. In the structure of collagen, crosslinks containing alpha and beta-unsaturated aldehydes between protein chains are present. Collagen gives strength and elasticity to skin and replaces dead skin cells.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 22, Problem 22.84SP

Interpretation Introduction