General, Organic, & Biological Chemistry
General, Organic, & Biological Chemistry
3rd Edition
ISBN: 9780073511245
Author: Janice Gorzynski Smith Dr.
Publisher: McGraw-Hill Education
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Chapter 23, Problem 23.39P
Interpretation Introduction

Interpretation:

Whether NAD+ is oxidized or reduced when a substrate is oxidized and whether NAD+ is an oxidizing or reducing agent needs to be determined.

Concept Introduction:

During oxidation of compound electrons or hydrogens are lost or oxygen is gained. During the reduction of a compound, electrons or hydrogens are gained or oxygen is lost. Coenzymes act as oxidizing agents or reducing agents. Oxidizing agent drives the oxidation reaction and gets reduced. Reducing agent drives reduction reactions and gets oxidized.

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Glycerol-3-phosphatase catalyzes the hydrolysis of glycerol-3-phosphate according to the following reaction.Glycerol-3-P + H₂O ⇌ glycerol + Pi When the enzyme is added to a solution of 1.25 M glycerol-3-phosphate at 25.0°C, and the reaction proceeds to equilibrium, the equilibrium concentration of glycerol-3-phosphate is 3.60×10⁻² M. Calculate the standard free energy of hydrolysis of glycerol-3-phosphate.
When the reaction below reaches equilibrium, does the equilibrium lie on the left or the right side?  Briefly explain. ClO–  +  CH3CO2H  ⇌  HClO  +  CH3CO2–   When the terminal phosphate is cleaved from the adenosine triphosphate molecule, the products are adenosine diphosphate and inorganic phosphate,  ATP + H2O  ––>  ADP  +  Pi, where Pi stands for the various forms of phosphate that exist at the pH of the particular solution.  If the total concentration of Pi  is 2.5 x 10–2M, what are the concentrations of the predominant forms of phosphate that exist at pH 7.4?     Permanganate, MnO4–, can act as an oxidizing agent in both acidic and basic aqueous solutions. Balance each of the following reactions by the half–reaction method, showing all steps in the balancing process.   MnO4–   +   Al   ––>   MnO2   +   Al(OH)4–                                in aqueous base   MnO4–   +   CH3COOH   ––>   Mn+2   +   CO2                            in aqueous acid
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General, Organic, & Biological Chemistry

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