WorksheetsKuperus 20i REDOX Quiz 2
Total questions: 10
Worksheet time: 5mins
1. A solution of acidified sodium permanganate is stored in an iron container. The net ionic equation for the reaction that occurs is
A. MnO4-(aq) + 8H+(aq) + Fe(s) --> Mn2+(aq) 4H2O(l) + Fe2+(aq)
B. MnO4-(aq) + 8H+(aq) + 5Na(s) --> Mn2+(aq) + 4H2O(l) + 5Na+(aq)
C. 2MnO4-(aq) + 16H+(aq) + 5Fe(s) --> 2Mn2+(aq) + 5Fe2+(aq) + 8H2O(l)
D. MnO4-(aq) + 8H+(aq) + Fe2+(aq) --> Mn2+(aq) + 4H2O(l) + Fe3+(aq)
A spontaneous reaction would occur in test tubes
A. I and V
B. I and III
C. II and IV
D. II and V
For the reaction Fe(s) + Sn4+(aq) --> Sn2+(aq) + Fe2+(aq), a true statement is
Fe(s) causes Sn4+(aq)to be reduced
Sn2+(aq) is the oxidizing agent
Fe(s) is the oxidizing agent
Sn4+(aq) causes Fe(s) to be reduced
The equation representing a spontaneous reaction at standard conditions is
Sn4+(aq) + 2Br-(aq) --> Sn2+(aq) + Br2(l)
2I-(aq) + Cl2(g) --> I2(s) 2Cl-(aq)
Pb(s) + Fe2+(aq) --> Pb2+(aq) + Fe(s)
Co2+(aq) + 2Fe2+(aq) --> Co(s) + 2Fe3+(aq)
Which of the following aqueous ions can either gain or lose electrons in a redox reaction
Cl-(aq)
Ca2+(aq)
S2-(aq)
Sn2+(aq)
The statement which supports the hypothesis that an unknown metal (X) is tin is
X reacts spontaneously with acidified potassium permanganate solution
X reacts spontaneously with copper(II) nitrate but not with H+(aq)
X reacts spontaneously with lead(II) nitrate but not with nickel (II) nitrate.
X reacts with H2S(aq) but not with copper
In the equation above, the oxidation number of the element oxidized is?
increased by 2
decreased by 2
increased by 5
decreased by 5
Which reaction is an Redox reaction?
NaOH(aq) + HCl(aq) ‑‑> NaCl(aq) + H2O(l)
AgNO3(aq) + KI(aq) ‑‑> AgI(s) + KNO3(aq)
Mg(OH)2(s) + H2SO4(aq) ‑‑> MgSO4(aq) + 2H2O(l)
Cu(s) + 4HNO3(aq) ‑‑> Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l)
What is the oxidation number of iodine in HIO64‑(aq) ?
+11
+9
+7
-3
The equation below which represents a Redox reaction is
C8H18(l) + 12.5O2(g) --> 8CO2(g) + 9H2O(g)
H3O+(aq) + OH-(aq) --> 2HOH(l)
KMnO4(s) --> K+(aq) + MnO4-(aq)
Pb2+(aq) + SO42-(aq) --> PbSO4(s)
