Multiple Choice
Trace amounts of oxygen gas can be "scrubbed" from gases using the following reaction:
4 Cr2+(aq) + O2(g) + 4 H+(aq) → 4 Cr3+(aq) + 2 H2O(l)
Which of the following statements is true regarding this reaction?
A) Oxygen gas is reduced to water.
B) Cr2+(aq) is the oxidizing agent.
C) O2(g) is the reducing agent.
D) Electrons are transferred from O2 to Cr2+.
Correct Answer:
Verified
Correct Answer:
Verified
Q13: The mixing of which pair of reactants
Q14: The substance KOH is a:<br>A)weak acid<br>B)salt<br>C)weak base<br>D)strong
Q15: Assuming that the proposed aqueous reactants are
Q16: A piece of iron wire weighing 1.63
Q17: Which of the following would have the
Q19: Which of the following compounds is an
Q20: Which of the following solutions has the
Q21: Based on the balanced chemical equation shown
Q22: For redox reactions to be balanced,electrons should
Q23: The substance HNO<sub>2</sub> is a:<br>A)strong base<br>B)strong acid<br>C)weak