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976
3CuO
(s)
+ 2NH
3(g)
→ 3Cu
(s)
+ 3H
2
O
(I)
N
2(g)
(i).
2NH
3(g)
+ 3Cl
2(g)
→ 6HCl
(g)
+ N
2(g)
(ii).
4NH
3(g)
+ 3O
2(g)
→ 6H
2
O
(I)
+ 2N
2(g)
(iii).
The reactions represented by the equations above demonstrate the?
A.
basic properties of ammonia
B.
acidic properties of ammonia
C.
reducing properties of ammonia
D.
oxidizing properties of ammonia
View Answer & Discuss (5)
JAMB 1998
977
A solution containing chloride ions gives white precipitate with silver trioxonitrate(V) Solution. The precipitate will be insoluble in dilute?
A.
HNO
3
but soluble in ammonia solution
B.
HNO
3
and ammonia solution
C.
HCl but soluble in ammonia solution
D.
HCl and in ammonia solution
View Answer & Discuss
JAMB 1998
978
The oxide that remains unchanged when heated in hydrogen is?
A.
CuO
B.
Fe
2
O
3
C.
PbO
2
D.
ZnO
View Answer & Discuss (18)
JAMB 1998
979
Which of the following is observed when a solution of iron (III) chloride is mixed with a solution of sodium hydroxide?
A.
A gas is evolved
B.
A deep blue precipitate is formed
C.
The resultant solution turns green turns
D.
A brown precipitate is formed
View Answer & Discuss (10)
JAMB 1998
980
The metal that will react with water only in the form of steam to librate hydrogen gas is?
A.
calcium
B.
aluminium
C.
iron
D.
zinc
View Answer & Discuss (17)
JAMB 1998
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