The process which occurs during the covalent modification of an enzyme using phosphorylation reaction has to be stated. Concept introduction: The process of covalently modifying the structure of enzyme by linking or removing a group from the amino acid within the structure of enzyme is called covalent modification. This process alters the activity of the enzyme.

Question

Using reaction free energy to predict equilibrium composition Consider the following equilibrium: 2NO2 (g) = N2O4(g) AGº = -5.4 kJ Now suppose a reaction vessel is filled with 4.53 atm of dinitrogen tetroxide (N2O4) at 279. °C. Answer the following questions about this system: Under these conditions, will the pressure of N2O4 tend to rise or fall? Is it possible to reverse this tendency by adding NO2? In other words, if you said the pressure of N2O4 will tend to rise, can that be changed to a tendency to fall by adding NO2? Similarly, if you said the pressure of N2O4 will tend to fall, can that be changed to a tendency to '2' rise by adding NO2? If you said the tendency can be reversed in the second question, calculate the minimum pressure of NO 2 needed to reverse it. Round your answer to 2 significant digits. 00 rise ☐ x10 fall yes no ☐ atm G Ar 1

Answer 1

Question

Chapter 21, Problem 21.69EP

(a)

Interpretation Introduction

Interpretation: The process which occurs during the covalent modification of an enzyme using phosphorylation reaction has to be stated.

Concept introduction: The process of covalently modifying the structure of enzyme by linking or removing a group from the amino acid within the structure of enzyme is called covalent modification. This process alters the activity of the enzyme.

(b)

Interpretation Introduction

Interpretation: The process which occurs during the covalent modification of an enzyme using a phosphatase enzyme has to be stated.

Concept introduction: The process of covalently modifying the structure of enzyme by linking or removing a group from the amino acid within the structure of enzyme is called covalent modification. This process alters the activity of the enzyme.

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Using reaction free energy to predict equilibrium composition Consider the following equilibrium: 2NO2 (g) = N2O4(g) AGº = -5.4 kJ Now suppose a reaction vessel is filled with 4.53 atm of dinitrogen tetroxide (N2O4) at 279. °C. Answer the following questions about this system: Under these conditions, will the pressure of N2O4 tend to rise or fall? Is it possible to reverse this tendency by adding NO2? In other words, if you said the pressure of N2O4 will tend to rise, can that be changed to a tendency to fall by adding NO2? Similarly, if you said the pressure of N2O4 will tend to fall, can that be changed to a tendency to '2' rise by adding NO2? If you said the tendency can be reversed in the second question, calculate the minimum pressure of NO 2 needed to reverse it. Round your answer to 2 significant digits. 00 rise ☐ x10 fall yes no ☐ atm G Ar 1

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