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UPSC CDS Science Chemistry Questions Part 1
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Question : 24
Total: 100
In the reaction between hydrogen sulphate ion and water
H
S
O
4
−
+
H
2
O
→
H
3
O
+
+
S
O
4
2
−
the water acts as
[2017 CDS-II]
an acid
a base
a salt
an inert medium
Validate
Solution:
The water cannot be an inert medium. It has undergone a change from
H
2
O
to
H
3
O
+
by accepting proton (H+) from
H
S
O
4
–
,
i.e.,
H
2
O
+
H
+
→
H
3
O
+
According to Bronsted-Lowrydefinition: A substance that accepts a proton is a base. So, water is acting as a base.
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