Oxidation-Reduction Reactions Pre-Laboratory Questions Oxidation may be defined as a loss of electrons by an atom, ion, or molecule, or as an increase in the oxidation state of an element in such a species. Give three examples that illustrate the equivalence of these two definitions. 1.

Oxidation-Reduction Reactions Pre-Laboratory Questions Oxidation may be defined as a loss of electrons by an atom, ion, or molecule, or as an increase in the oxidation state of an element in such a species. Give three examples that illustrate the equivalence of these two definitions. 1.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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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 c. reduction b. balancing reaction d. half-reaction
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Write the balanced net ionic equation for the reaction. Include phases. (The video shows the addition of aqueous sodium carbonate to a solution of aqueous magnesium nitrate.)
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Write the net equation of a solution of hydrobromic acid mixing with barium hydroxide?
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First, assign oxidation numbers for each atom in the balanced chemical equation below. You'll find it easiest to fill the blanks in left to right since once there is an oxidation number typed in the blank it will be much closer to appearing over the appropriate elemental symbol. Blank 1 Blank 2Blank 3 12Blank 13 Blank 4Blank 5Blank 6 Blank 14Blank 15Blank 16 KMnO4(aq) + KCIO₂(aq) + H₂O(l) → 4 MnO₂(s) + 3 KCIO4(aq) + 4 KOH(aq) Now, identify each of the following What underwent reduction? Blank 17 Blank 7Blank 8 What gained electrons? Blank 18 • What got oxidized? Blank 19 What is the oxidizing agent? Blank 20 • What is the reducer? Blank 21 What lost electrons? Blank 22 Blank 9Blank 10 Blank 11 Blank
Question 30 of 31 A chemist needs to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solution. He has a 0.1598 M standard sodium hydroxide solution. He takes a 25.00 mL sample of the original acid solution and dilutes it to 250.0 mL. Then, he takes a 10.00 mL sample of the dilute acid solution and titrates it with the standard solution. The endpoint was reached after the addition of 16.34 mL of the standard solution. What is the concentration of the original sulfuric acid solution? concentration: