The black,granular material that fills a dry cell in a common flashlight (between the carbon rod and the zinc shell) is manganese(II) oxide,MnO₂.The oxidation number of manganese in MnO₂ is
A) +2.
B) -2.
C) +4.
D) -4.
Correct Answer:
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Q1: Consider the following unbalanced half-reaction: MnO₄⁻ →
Q2: In which of the following is the
Q3: Every reduction reaction MUST be accompanied by
A)an
Q5: Consider the following unbalanced equation between copper(I)ions
Q6: Sodium bisulfite converts bromine (Br₂)to bromide (Br⁻).Sodium
Q7: In the reaction Cu⁺ + Fe →
Q8: What is the oxidation number of bismuth
Q9: In which of the following partial reactions
Q10: The oxidation number of F⁻¹ is
A)-1.
B)0)
C)+1.
D)2)
Q11: Which substance is an oxidizing agent?
A)NaOH
B)H₂O₂
C)HI
D)LiBr
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