Pearson eText Fundamentals of General, Organic, and Biological Chemistry -- Instant Access (Pearson+)
8th Edition
ISBN: 9780135213759
Author: John McMurry, David Ballantine
Publisher: PEARSON+
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Chapter 3, Problem 3.90GP
Interpretation Introduction
Interpretation:
The name and formula of the fluoride in toothpaste to be identified
Concept Introduction:
Fluorides in toothpaste: Fluorides are active ingredient in toothpaste to prevent cavities.
The symbolic representation of ions:
The electrons are reside in the principal quantum number ‘n’; by losing and gaining electron, reduces and increases in the electron count in the electronic configuration of the atom; for a cation adding positive charge as a superscript to the symbol of the element and for the anion adding negative charge as superscript to the symbol of the element.
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Students have asked these similar questions
The glycolytic enzyme Phosphofructokinase (PFK) catalyzes the following reaction: Fructose-6-phosphate
(F6P) + ATP → Fructose-1,6-bisphosphate (F1,6BP) + ADP AG"=-14.2 kJ/mol This is considered the
enzymatic step that commits a sugar substrate to glycolysis.
a) Calculate the standard free energy of hydrolysis of fructose-1,6-bisphosphate.
b) What is the equilibrium constant for this coupled reaction?
c) ATP is a known inhibitor of PFK. If the cellular concentrations of ATP and ADP are 5 mM and 1.0mM
respectively, and the concentrations of F6P and F1,6BP are 2mM, what is the free energy change of
the system?
2) Consider the following reaction: A + 2B 3C + D
At equilibrium the concentration of the reactants and products are:
[A] = 20.0 mM
[C] = 3.0 mM
[B] = 4.0 mM
[D] = 50.0 mM
Calculate (a) the equilibrium constant and (b) AG". Comment on which side of this reaction
is more likely to occur.
Glycine is a diprotic acid, which can potentially undergo two dissociation reactions, one for the a-amino group (NH), and
the other for the carboxyl (-COOH) group. Therefore, it has two pK₁ values. The carboxyl group has a pK₁ of 2.34 and the
α-amino group has a pK2 of 9.60. Glycine can exist in fully deprotonated (NH2-CH2-COO¯), fully protonated
(NH3-CH2-COOH), or zwitterionic form (NH3-CH2-COO¯).
Match the pH values with the corresponding form of glycine that would be present in the highest concentration in a solution of
that pH.
fully deprotonated form
NH2-CH2-COO-
fully protonated form
NH–CH,–COOH
zwitterionic form
NH–CH,−COO
Answer Bank
pH 7.0
pH 11.9
pH 6.0
pH 8.0
pH 1.0
Chapter 3 Solutions
Pearson eText Fundamentals of General, Organic, and Biological Chemistry -- Instant Access (Pearson+)
Ch. 3.1 - Magnesium atoms lose two electrons when they...Ch. 3.1 - Prob. 3.2PCh. 3.1 - Prob. 3.3KCPCh. 3.2 - Prob. 3.4PCh. 3.2 - Prob. 3.5PCh. 3.2 - Prob. 3.6KCPCh. 3.3 - Iron is an important component of hemoglobin, a...Ch. 3.3 - Prob. 3.8PCh. 3.3 - Blood serum in healthy adults normally contains...Ch. 3.4 - Prob. 3.10P
Ch. 3.4 - Which element in the following pairs is likely to...Ch. 3.4 - Prob. 3.12PCh. 3.5 - Prob. 3.1CIAPCh. 3.5 - Prob. 3.13PCh. 3.5 - Prob. 3.14PCh. 3.5 - Prob. 3.15PCh. 3.6 - Prob. 3.16PCh. 3.6 - Prob. 3.17PCh. 3.6 - Prob. 3.3CIAPCh. 3.6 - Prob. 3.4CIAPCh. 3.8 - Prob. 3.18PCh. 3.8 - Prob. 3.19PCh. 3.8 - Prob. 3.20PCh. 3.8 - Prob. 3.21KCPCh. 3.9 - Prob. 3.22PCh. 3.9 - Name the following compounds: (a)SnO2 (b)Ca(CN)2...Ch. 3.9 - Prob. 3.24PCh. 3.9 - Prob. 3.25KCPCh. 3.10 - Prob. 3.26PCh. 3.10 - Prob. 3.5CIAPCh. 3.11 - Prob. 3.27PCh. 3.11 - Prob. 3.28KCPCh. 3.11 - Prob. 3.7CIAPCh. 3 - Prob. 3.29UKCCh. 3 - Prob. 3.30UKCCh. 3 - Write the symbols for the ions represented in the...Ch. 3 - Prob. 3.32UKCCh. 3 - Prob. 3.33UKCCh. 3 - Prob. 3.34UKCCh. 3 - Prob. 3.35UKCCh. 3 - Prob. 3.36UKCCh. 3 - Prob. 3.37APCh. 3 - Prob. 3.38APCh. 3 - Prob. 3.39APCh. 3 - Prob. 3.40APCh. 3 - Prob. 3.41APCh. 3 - Identify the element X in the following ions and...Ch. 3 - Prob. 3.43APCh. 3 - Prob. 3.44APCh. 3 - Based on the following atomic numbers and...Ch. 3 - Prob. 3.46APCh. 3 - Prob. 3.47APCh. 3 - Prob. 3.48APCh. 3 - Prob. 3.49APCh. 3 - Prob. 3.50APCh. 3 - Prob. 3.51APCh. 3 - Prob. 3.52APCh. 3 - Prob. 3.53APCh. 3 - Prob. 3.54APCh. 3 - Prob. 3.55APCh. 3 - Prob. 3.56APCh. 3 - (a)Write equations for the loss of an electron by...Ch. 3 - Prob. 3.58APCh. 3 - Prob. 3.59APCh. 3 - Prob. 3.60APCh. 3 - Prob. 3.61APCh. 3 - Prob. 3.62APCh. 3 - Prob. 3.63APCh. 3 - Prob. 3.64APCh. 3 - Prob. 3.65APCh. 3 - Prob. 3.66APCh. 3 - Prob. 3.67APCh. 3 - Prob. 3.68APCh. 3 - Prob. 3.69APCh. 3 - Prob. 3.70APCh. 3 - Prob. 3.71APCh. 3 - Prob. 3.72APCh. 3 - Prob. 3.73APCh. 3 - Prob. 3.74APCh. 3 - Prob. 3.75APCh. 3 - Prob. 3.76APCh. 3 - Give the formula and the name of the anions for...Ch. 3 - Explain why the hydride ion, H, has a noble gas...Ch. 3 - The H ion (Problem 3.78) is stable but the Li ion...Ch. 3 - Prob. 3.80CPCh. 3 - Prob. 3.81CPCh. 3 - The names given for the following compounds are...Ch. 3 - The formulas given for the following compounds are...Ch. 3 - Prob. 3.84CPCh. 3 - Element X reacts with element Y to give a product...Ch. 3 - Prob. 3.86CPCh. 3 - The term alum" refers to a group of ionic...Ch. 3 - Prob. 3.88GPCh. 3 - Prob. 3.89GPCh. 3 - Prob. 3.90GP
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- The AG of hydrolysis of a sugar phosphate (S-O-P) to the free sugar (S-OH) is -26.6 kJ/mol in a hypothetical cell in which the steady-state concentrations of sugar phosphate, free sugar, and inorganic phosphate are 1.0 mM, 0.20 mM, and 50.0 mM, respectively. S-O-P + H2O S-OH + Pi (a) What is the AG°' for this reaction? (b) In the cell, S-O-P is formed by the transfer of a phosphate group from ATP. What would the AG be for the transfer of the g-phosphate from ATP to this sugar (S-OH)? [AG for ATP hydrolysis is -31 kJ/mol.]arrow_forward1) Consider the reaction: A B + C (a) What is the Keg for this reaction? AG= -8.80 kJ/mol (b) The reverse reaction is initiated by creating a solution containing 20mM B, 1mM A and 150mM C. At the instant these are mixed, what is the free energy change associated with the reaction?arrow_forwardWhat is the chemical importance of the negative charge on the phosphate group? Be asspecific as possible. In what ways might this negative charge have beenthermodynamically useful during the evolution of ATP-binding proteins?arrow_forward
- One prominent theory on life origins was that RNA enzymes came into existence early inthe prebiotic history of Earth and were able to do basic chemical catalyses. Eventually,this “RNA-world” was overtaken by the stability of DNA as an information carrier and thediversity of catalytic functions capable of being performed by polypeptides. Is the RNA world hypothesis is a well-founded model?arrow_forwardThe AG" of hydrolysis (ATP + H2O --> ADP + Pi) is -31.0 kJ/mol. Answer the following questions assuming that the steady-state concentrations in the cell are as indicated below. (Note: Steady-state refers to a non-equilibrium situation that exists due to a balance between reactions that supply and remove these substances.) [ADP] = 0.40 mM, [ATP] = 4.0 mM, and [Pi] = 40.0 mM a) Calculate the equilibrium constant for this reaction. b) What would the AG' for ATP hydrolysis be in the cell? c) Is this reaction at equilibrium in the cell? Briefly explain your answer.arrow_forward5) Theoretically, ATP did not have to become our bodies' main energy currency. Two alternative carriers, acetyl phosphate and S-adenosylmethionine could have been utilized, rather than ATP. AG" for acetyl phosphate hydrolysis is -43.3 kJ/mol and AG" for S- adenosylmethionine hydrolysis is -25.6 kJ/mol. (a) Calculate the weight of each alternative energy carrier that would need to be consumed by humans on a 2000 calorie per day diet if our bodies could not recycle it. Assume a 50% absorption of energy from our diet. (b) If our bodies contain 25g of each alternative energy carrier and they CAN be recycled, how many times would each molecule of each energy carrier need to be recycled? (c) Comment on the special properties of ATP and why it is unlikely that these alternative carriers would be utilized biologically.arrow_forward
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