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856
H
-
+ H
2(I)
O → H
2(g)
+ OH
-
(aq)
. From the equation above, it can be inferred that the?
A.
reaction is a double decomposition
B.
hydride ion is a reducing agent
C.
hydride ion is an oxidizing agent
D.
reaction is neutralization
View Answer & Discuss (8)
JAMB 1994
857
An anhydride is an oxide of non-mental
A.
which will not dissolve in water
B.
whose solution in water has a pH greater than 7
C.
whose solution in water has a pH less than 7
D.
whose solution in water has a pH of 7
View Answer & Discuss (5)
JAMB 1994
858
MnO
4(aq)
+ 8H +
(aq)
+ 5Fe
2+
→ Mn
2+(aq)
+ 4H
2
O
(I)
. The oxidation number of manganese in the above reaction changed from?
A.
+7 to +2
B.
+6 to +2
C.
+5 to +2
D.
+4 to +2
View Answer & Discuss (21)
JAMB 1994
859
Which of the following is TRUE of Le Chatelier's Principle for an exothermic reaction?
A.
Increase in temperature will cause an increase in the equilibrium constant
B.
Increase in temperature will cause a decrease in the equilibrium constant
C.
Addition of a catalyst will cause an increase in the equilibrium constant
D.
Addition of a catalyst will cause a decrease in the equilibrium constant
View Answer & Discuss (8)
JAMB 1994
860
Which of the following are produced when ammonium trioxonitrate (V) crystals are cautiously heated in a hard glass round bottomed flask?
A.
N
2
O and steam
B.
NO
2
and ammonia
C.
N
2
O
2
and NO
2
D.
NO and NO
2
View Answer & Discuss (11)
JAMB 1994
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