▼ Part A Which of the following reactions would be classified as oxidation-reduction? Check all that apply. ► View Available Hint(s) 2Na(s) + Cl2 (g)→2NaCl(s) Na(s) + CuCl(aq)→NaCl(aq) + Cu(s) NaCN(aq)+CuCl(aq)—NaCl(aq) +CuCN(s) Submit Provide Feedback

▼ Part A Which of the following reactions would be classified as oxidation-reduction? Check all that apply. ► View Available Hint(s) 2Na(s) + Cl2 (g)→2NaCl(s) Na(s) + CuCl(aq)→NaCl(aq) + Cu(s) NaCN(aq)+CuCl(aq)—NaCl(aq) +CuCN(s) Submit Provide Feedback

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter24: Biochemistry

Section: Chapter Questions

Problem 34GQ: The first step of the metabolic process known as glycolysis is the conversion of glucose to glucose-...

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Concept explainers

Science behind corrosion-test

Corrosion is defined as an activity that transforms refined metals into more chemically stable forms such as oxide, hydroxide, carbonate, or sulfide. It refers to the slow decomposition of things (typically metals); thanks to chemical and/or electrochemical reactions with their surroundings. Corrosion engineering is the science of preventing and controlling corrosion.

Corrosion

Question

In oxidation-reduction reactions, one substance
loses electrons (oxidation) while another substance
gains electrons (reduction). A convenient way to
recognize oxidation is to look for an increase in
charge. Similarly, a convenient way to recognize
reduction is to look for a decrease in charge.
Consider the following equation:
2MgO(s)→2Mg(s) + O₂(g)
Here is the same reaction, but with the ionic
compound MgO rewritten to show its individual
ions:
2Mg2+ + 202- →2Mg(s) + O2(g)
Now it is much clearer to see that magnesium
decreases in charge (reduction) while oxygen
increases in charge (oxidation).
Part A
Which of the following reactions would be classified as oxidation-reduction?
Check all that apply.
► View Available Hint(s)
2Na(s) + Cl₂ (g)→2NaCl(s)
Na(s) + CuCl(aq) →NaCl(aq) + Cu(s)
_ NaCN(aq)+CuCl(aq)→NaCl(aq)+CuCN(s)
Submit
Provide Feedback
Review | Constants | Per

In one of the reactions in the citric acid cycle, which provides energy for ATP synthesis, succinic acid is converted to fumaric acid:
+ 2H
C4 H6 O4
succinic acid
The reaction is accompanied by a coenzyme, flavin adenine dinucleotide (FAD):
Part A
Submit
oxidized
Indicate whether succinic acid and FAD are oxidized or reduced.
Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer
reduced
addition
loss
Request Answer
→
C4H4O4
fumaric acid
FAD + 2H → FADH2
The reaction of FAD involves the
The reaction of succinic acid involves the
of hydrogen; therefore FAD is
Reset Help
of hydrogen; therefore succinic acid is

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Human xanthine oxidase catalyzes the oxidation of hypoxanthine to xanthine and can further catalyze the oxidation of xanthine to uric acid. For the treatment of hyperuricemia and gout, several medications are used to inhibit the activity of xanthine oxidase and reduce the production of uric acid. You are a biochemist and just discovered a chemical that can inhibit the activity of the human xanthine oxidase. When analyzing its mode of inhibition, you found that the enzyme inhibitor complex requires 450 kJ.mol to dissociate and that it displays kinetics somehow similar to noncompetitive inhibition. You sent your inhibitor to the ministry of health for approval as a medication for gout. Based on the data provided, are they going to authorize it as a medication or not? Explain?
Human xanthine oxidase catalyzes the oxidation of hypoxanthine to xanthine and can further catalyze the oxidation of xanthine to uric acid. For the treatment of hyperuricemia and gout, several medications are used to inhibit the activity of xanthine oxidase and reduce the production of uric acid. You are a biochemist and just discovered a chemical that can inhibit the activity of the human xanthine oxidase. When analyzing its mode of inhibition, you found that the enzyme inhibitor complex requires 450 J/mol to dissociate and that it displays kinetics somehow similar to noncompetitive inhibition. You sent your inhibitor to the ministry of health for approval as a medication for gout. Based on the data provided, are they going to authorize it as a medication or not? Explain?
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