Introduction to General, Organic and Biochemistry
11th Edition
ISBN: 9781285869759
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Cengage Learning
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Chapter 7, Problem 7.33P
Interpretation Introduction
Interpretation:
Whether an exothermic reaction will be taking place rapidly or not should be explained.
Concept Introduction:
For a reaction to take place rapidly the Gibb’s free energy change must be negative.
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Balanced reaction for the combustion of propane is given below. Actual structures of the reactants and the products without the lone-pair (non-bonding) electrons are shown
in the reaction.
H H H
+ 4
H.
H-C-C-C-
5 0=0
3 0=C=DO
H.
H HH
i. How many C-C bonds are broken in the above reaction?
ii. How many C-H bonds are broken?
iii. How many O=O bonds are broken?
iv. How many C=O bonds are are formed?
v. How many O-H bonds are are formed?
vi. Calculate the bond energy of C-C if the heat of combustion, AH for propane, C3H8 is -2050 kJ. Use the following bond dissociation enthalpies, D and the correct expression
from the formula sheet and solve for C-C to get the answer.
DELL
=
○ KINETICS AND EQUILIBRIUM
Drawing the reaction energy diagram of a catalyzed reaction
Sketch a qualitative reaction energy diagram for a chemical reaction with and without a catalyst. Assume the uncatalyzed reaction is exothermic.
Note: Because the sketches are only qualitative, the energies in them don't have to be exact. They only have to have the right relationship to each other. For
example, if one energy is less than another, that fact should be clear in your sketch.
energy
Uncatalyzed reaction
reactants
Ea
reaction coordinate
products
energy
Catalyzed reaction
reactants
Ea
reaction coordinate
0/3
products
The following reversible enzymatic reaction occurs in many areas of the body, but especially in red blood cells. The conversion of water and carbon dioxide into bicarbonate and hydrogen ions occurs through the action of an enzyme called carbonic anhydrase. Use the Law of Mass Action to predict which direction this equation will go under different circumstances.
CO2 + H2O ↔ H+ + HCO3-
Hyperventilating would increase the loss of carbon dioxide (CO2) from the blood. In what direction would the reaction above go in order to restore equilibrium? Left or right?
Chapter 7 Solutions
Introduction to General, Organic and Biochemistry
Ch. 7.1 - Problem 7-1 In the reaction we measure the...Ch. 7.4 - Problem 7-2 Calculate the rate for the reaction in...Ch. 7.6 - Prob. 7.3PCh. 7.6 - Prob. 7.4PCh. 7.6 - Prob. 7.5PCh. 7.7 - Prob. 7.6PCh. 7.7 - Problem 7-7 Consider the following equilibrium...Ch. 7.7 - Prob. 7.8PCh. 7.7 - Prob. 7.9PCh. 7 - 7-10 The rate of disappearance of HCI was measured...
Ch. 7 - 7-11 Consider the following reaction: Suppose we...Ch. 7 - 7-12 Two kinds of gas molecules are reacted at a...Ch. 7 - 7-13 Why are reactions between ions in aqueous...Ch. 7 - Prob. 7.14PCh. 7 - 7-15 A certain reaction is exothermic by 9...Ch. 7 - 7-16 A quart of milk quickly spoils if left at...Ch. 7 - 7-17 If a certain reaction takes 16 h to go to...Ch. 7 - Prob. 7.18PCh. 7 - Prob. 7.19PCh. 7 - Prob. 7.20PCh. 7 - Prob. 7.21PCh. 7 - 7-22 If you add a piece of marble, CaCO3 to a 6 M...Ch. 7 - Prob. 7.23PCh. 7 - Prob. 7.24PCh. 7 - Prob. 7.25PCh. 7 - 7-26 Write the chemical equations corresponding to...Ch. 7 - Prob. 7.27PCh. 7 - 7-28 When the following reaction reached...Ch. 7 - 7-29 The following reaction was allowed to reach...Ch. 7 - Prob. 7.30PCh. 7 - 7-31 Here are equilibrium constants for several...Ch. 7 - 7-32 A particular reaction has an equilibrium...Ch. 7 - Prob. 7.33PCh. 7 - Prob. 7.34PCh. 7 - 7-35 A reaction has a high rate constant but a...Ch. 7 - 7-36 Complete the following table showing the...Ch. 7 - Prob. 7.37PCh. 7 - Prob. 7.38PCh. 7 - Prob. 7.39PCh. 7 - 7-40 Is there any change in conditions that change...Ch. 7 - 7-41 The equilibrium constant at 1127°C for the...Ch. 7 - Prob. 7.42PCh. 7 - 7-43 (Chemical Connections 7A and 7B) Why is a...Ch. 7 - Prob. 7.44PCh. 7 - 7-45 (Chemical Connections 7C) A painkiller—for...Ch. 7 - 7-46 (Chemical Connections 7D) What reaction takes...Ch. 7 - Prob. 7.47PCh. 7 - Prob. 7.48PCh. 7 - Prob. 7.49PCh. 7 - 7-50 Draw an energy diagram for an exothermic...Ch. 7 - Prob. 7.51PCh. 7 - Prob. 7.52PCh. 7 - Prob. 7.53PCh. 7 - Prob. 7.54PCh. 7 - Prob. 7.55PCh. 7 - Prob. 7.56PCh. 7 - 7-57 Write the reaction to which the following...Ch. 7 - Prob. 7.58PCh. 7 - Prob. 7.59PCh. 7 - Prob. 7.60PCh. 7 - Prob. 7.61PCh. 7 - Prob. 7.62PCh. 7 - Prob. 7.63PCh. 7 - 7-64 As we shall see in Chapter 20, there are two...Ch. 7 - Prob. 7.65PCh. 7 - Prob. 7.66PCh. 7 - Prob. 7.67PCh. 7 - Prob. 7.68PCh. 7 - 7-69 Pure carbon exists is several forms, two of...Ch. 7 - Prob. 7.70PCh. 7 - 7-71 You have a beaker that contains solid silver...Ch. 7 - Prob. 7.72PCh. 7 - Prob. 7.73PCh. 7 - Prob. 7.74PCh. 7 - Prob. 7.75PCh. 7 - Prob. 7.76PCh. 7 - Prob. 7.77PCh. 7 - Prob. 7.78PCh. 7 - Prob. 7.79PCh. 7 - Prob. 7.80PCh. 7 - Prob. 7.81PCh. 7 - 7-82 An equilibrium mixture of O2, SO2, and SO3...Ch. 7 - Prob. 7.83PCh. 7 - Prob. 7.84P
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- 7-22 If you add a piece of marble, CaCO3 to a 6 M HCI solution at room temperature, you will see some bubbles form around the marble as gas slowly rises. If you crush another piece of marble and add it to the same solution at the same temperature, you will see vigorous gas formation, so much so that the solution appears to be boiling. Explain.arrow_forward7-17 If a certain reaction takes 16 h to go to completion at 10°C, what temperature should we run it if we want it to go to completion in 1 h?arrow_forward7-46 (Chemical Connections 7D) What reaction takes place when sunlight hits the compound silver chloride?arrow_forward
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