Core
Reactions: Balancing Redox Equations
Slide 28 of 29
Practice Questions: Multiple Choice Questions
6. MH04/31. What is the coefficient for H+ when the equation below is balanced?
__Pb(s) + __ NO3-(aq) + __H+ (aq) à __Pb2+ (aq) + __NO(g) + __H2O(l)
A.2 B. 4 C. 6 D.
8
7. MS04/25.
What happens to the Cr3+(aq) ion when it is converted to CrO42-(aq)?
A. Its oxidation number decreases and it undergoes
reduction.
B. Its oxidation number decreases and it undergoes
oxidation.
C. Its oxidation number increases and it undergoes
reduction.
D. Its oxidation number increases and it undergoes
oxidation.
8. NH03/31. When
the following equation is balanced, what is the coefficient for
Ce4+?
_ SO32- + _ H2O +
_ Ce4+
à _ SO42- + _ H+ + _ Ce3+
A. 1 B. 2 C.
3 D. 4