Tardigrade
Tardigrade - CET NEET JEE Exam App
Exams
Login
Signup
Tardigrade
Question
Chemistry
The method used to remove temporary hardness of water is:
Q. The method used to remove temporary hardness of water is:
3605
297
NEET
NEET 2019
Hydrogen
Report Error
A
ion-exchange method
11%
B
Synthetic resins method
7%
C
Calgon's method
16%
D
Clark's method
66%
Solution:
Clark's method is used to remove temporary hardness of water, in which bicarbonates of calcium and magnesium are reacted with slaked lime
C
a
(
O
H
)
2
C
a
(
H
C
O
3
)
2
+
C
a
(
O
H
)
2
⟶
2
C
a
C
O
3
V
+
2
H
2
O
M
g
(
H
C
O
3
)
2
+
2
C
a
(
O
H
)
2
⟶
2
C
a
C
O
3
V
+
M
g
(
O
H
)
2
V
+
2
H
2
O