Choose the letter of the correct answer. 1. Which is statement is INCORRECT? a. An oxidation-reduction reaction is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron. b. Reduction is a process in which an atom gains an electron and therefore decreases (or reduces its oxidation number). c. Oxidation is a process in which an atom gains an electron and therefore increases its oxidation number. d. An electron-donating species which tends to hand over electrons can be referred to as a reducing agent. 2. What chemical process must always accompany a reduction process? a. oxidation b. balancing reaction 3. What is the oxidation number of any element in the free or uncombined state? а. О h +1 c. reduction d. half-reaction с. -1 d t?
Choose the letter of the correct answer. 1. Which is statement is INCORRECT? a. An oxidation-reduction reaction is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron. b. Reduction is a process in which an atom gains an electron and therefore decreases (or reduces its oxidation number). c. Oxidation is a process in which an atom gains an electron and therefore increases its oxidation number. d. An electron-donating species which tends to hand over electrons can be referred to as a reducing agent. 2. What chemical process must always accompany a reduction process? a. oxidation b. balancing reaction 3. What is the oxidation number of any element in the free or uncombined state? а. О h +1 c. reduction d. half-reaction с. -1 d t?
Chemistry for Today: General, Organic, and Biochemistry
9th Edition
ISBN:9781305960060
Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Chapter5: Chemical Reactions
Section: Chapter Questions
Problem 5.72E: In an ordinary flashlight battery, an oxidation reaction and a reduction reaction rake place at...
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Choose the letter of the correct answer.
1. Which is statement is INCORRECT?
a. An oxidation-reduction reaction is any chemical reaction in which the oxidation number of
a molecule, atom, or ion changes by gaining or losing an electron.
b. Reduction is a process in which an atom gains an electron and therefore decreases (or
reduces its oxidation number).
c. Oxidation is a process in which an atom gains an electron and therefore increases its
oxidation number.
d. An electron-donating species which tends to hand over electrons can be referred to as a
reducing agent.
2. What chemical process must always accompany a reduction process?
c. reduction
d. half-reaction
a. oxidation
b. balancing reaction
3. What is the oxidation number of any element in the free or uncombined state?
а. О
с. -1
b. +1
d. +2
4. What is the sum of the oxidation number of NO,?
а. О
C. -1
b. +1
d. +2
5. What is the oxidation number of Zinc in ZnH2?
а. О
C. -1
b. +1
d. +2
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