Homework Answers
E° is the standard reduction potential. So it applies when the activities of reactants and products are unity.
E is the reduction potential during the reaction so it applies to whatever activity exits.
Option 1 and 3
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What is the difference between E and Eº for a redox reaction? (Select all that apply.)...
1. The voltage difference between the plates depends on (select all that apply) a. the area...
1. The voltage difference between the plates depends on (select all that apply) a. the area of the plates b. the distance between the plates c. the charge on the plates d. the conductivity of the plates e.the sensitivity of the plates 2. The capacitance of a parallel plate capacitor depends on (select all that apply) a. the voltage difference between the plates b. the electric field between the plates c. the distance between the plates d. the charge on...
Select all that apply. Atom A reacts with molecule BC according to the following reaction: 10...
Select all that apply. Atom A reacts with molecule BC according to the following reaction: 10 points A + BC → products If an atom of A collides with a molecule of BC, but no reaction occurs, what are the possible reasons why? Select all that apply. A. The reactants are moving too rapidly for the reaction to occur. B. There are too few of one of the reactants for the reaction to occur. c. The reactants did not collide...
What is/are the product(s) for the following reaction? Select all that apply. What is are the...
What is/are the product(s) for
the following reaction? Select all that apply.
What is are the products for the following reaction Select all that apply. 1.03 2. DMS | HH
An enzyme facilitates chemical reactions by: Select one: a. Increasing the free-energy difference between reactants and...
An enzyme facilitates chemical reactions by: Select one: a. Increasing the free-energy difference between reactants and products. b. Decreasing the free-energy difference between reactants and products. c. Lowering the activation energy of the reaction. d. Raising the activation energy of the reaction. e. None of the above. Q2. Enzymes are important components of biological systems because they: Select one: a. Speed up reactions. b. Reduce the activation energy of reactions allowing them to occur. c. Catalyze specific reactions, allowing for...
QUESTION 17 Which of the following are redox reactions (select all that apply)? Mg + Cl2...
QUESTION 17 Which of the following are redox reactions (select all that apply)? Mg + Cl2 - MgCl2 O H2+02-H20 u C3H6+02- CO2 + H20 UKCI + Ca(NO3)2 – KNO3 +CaCl2 QUESTION 18 Which element is being OXIDIZED in the following reaction? 4HCI + O2-2012 + 2H20 Hydrogen O Chlorine Oxygen O None of the above
Select all of the following that are true in regards to redox reactions. Question 6 options:...
Select all of the following that are true in regards to redox reactions. Question 6 options: Oxidation occurs at the cathode of a galvanic cell. An oxidizing agent is needed to convert CO into CO2. If a species is oxidized, it is formally losing electrons. Electron flow is always from the anode to the cathode in an electrochemical cell. If there are no changes in the oxidation state of the reactants or products of a particular reaction, that reaction is...
What is the difference between a direct titration and a back titration? (Select all that apply.)...
What is the difference between a direct titration and a back titration? (Select all that apply.) In a direct titration, a known excess of reagent that reacts with analyte is used. The excess is then measured with a second titrant. In a back titration, titrants react directly with analyte. In a direct titration, titrants react directly with analyte. In a back titration, a known excess of reagent that reacts with analyte is used. The excess is then measured with a...
When balancing redox reactions using the half-reaction method, several conditions apply. Check all the REQUIRED conditions....
When balancing redox reactions using the half-reaction method, several conditions apply. Check all the REQUIRED conditions. When combining half-reactions, you must make sure the total number of electrons in each half cancels out. Oxidizing agents gain electrons. Electrons are reactants in the reduction half-reaction The number of electrons transferred by a reducing agent can be found by counting oxidation numbers. For polyatomic ions, the oxidation number of the central atom is the same as the charge. The total charges of...
If AG < 0 for a reaction, which of the following is/are true? Select all that...
If AG < 0 for a reaction, which of the following is/are true? Select all that apply. There will be no net change in the amounts of reactants or products. The reaction is spontaneous in the forward direction. The reaction is spontaneous in the reverse direction. The reaction is at equilibrium. The reaction will proceed to form more products. The reaction will proceed to form more reactants.
Which of the following are correct for first-order reactions? Select all that apply. ? The reaction...
Which of the following are correct for first-order reactions? Select all that apply. ? The reaction slows down as the reaction proceeds. ? A higher concentration of reactants will speed up the reaction. ? The concentration of the reactants changes nonlinearly. The half-life of the reaction stays constant as the reaction proceeds The units for the rate constant and the rate of reaction are the same.
Select all that apply. Atom A reacts with molecule BC according to the following reaction: 10 points A + BC → products If an atom of A collides with a molecule of BC, but no reaction occurs, what are the possible reasons why? Select all that apply. A. The reactants are moving too rapidly for the reaction to occur. B. There are too few of one of the reactants for the reaction to occur. c. The reactants did not collide...
What is/are the product(s) for
the following reaction? Select all that apply.
What is are the products for the following reaction Select all that apply. 1.03 2. DMS | HH
QUESTION 17 Which of the following are redox reactions (select all that apply)? Mg + Cl2 - MgCl2 O H2+02-H20 u C3H6+02- CO2 + H20 UKCI + Ca(NO3)2 – KNO3 +CaCl2 QUESTION 18 Which element is being OXIDIZED in the following reaction? 4HCI + O2-2012 + 2H20 Hydrogen O Chlorine Oxygen O None of the above
When balancing redox reactions using the half-reaction method, several conditions apply. Check all the REQUIRED conditions. When combining half-reactions, you must make sure the total number of electrons in each half cancels out. Oxidizing agents gain electrons. Electrons are reactants in the reduction half-reaction The number of electrons transferred by a reducing agent can be found by counting oxidation numbers. For polyatomic ions, the oxidation number of the central atom is the same as the charge. The total charges of...
If AG < 0 for a reaction, which of the following is/are true? Select all that apply. There will be no net change in the amounts of reactants or products. The reaction is spontaneous in the forward direction. The reaction is spontaneous in the reverse direction. The reaction is at equilibrium. The reaction will proceed to form more products. The reaction will proceed to form more reactants.
Which of the following are correct for first-order reactions? Select all that apply. ? The reaction slows down as the reaction proceeds. ? A higher concentration of reactants will speed up the reaction. ? The concentration of the reactants changes nonlinearly. The half-life of the reaction stays constant as the reaction proceeds The units for the rate constant and the rate of reaction are the same.
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