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Tardigrade
Question
Chemistry
Which of the following reaction produces hydrogen?
Q. Which of the following reaction produces hydrogen?
2011
215
AIIMS
AIIMS 2002
The s-Block Elements
Report Error
A
M
g
+
H
2
O
64%
B
H
2
S
4
O
8
+
H
2
O
14%
C
B
a
O
2
+
H
Cl
8%
D
N
a
2
O
2
+
2
H
Cl
14%
Solution:
Alkali and alkaline earth metals react with water to produce hydrogen gas and metal hydroxide. This is due to their high electropositive character.
2
N
a
+
2
H
2
O
⟶
2
N
a
O
H
+
H
2
M
g
+
2
H
2
O
⟶
M
g
(
O
H
)
2
+
H
2