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Test Index
Ionic Equilibrium Part 1
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Section:
Chemistry
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© examsnet.com
Question : 52
Total: 100
For the following Assertion and Reason, the correct option is :
Assertion : The pH of water increases with increase in temperature.
Reason : The dissociation of water into
H
+
and
O
H
−
is an exothermic reaction.
[8 Jan 2020 Shift 2]
Both assertion and reason are true, but thereason is not the correct explanation for theassertion.
Both assertion and reason are false.
Assertion is not true, but reason is true.
Both assertion and reason are true, and the reason is the correct explanation for the assertion.
Validate
Solution:
H
2
O
(
l
)
⇌
H
+
(
a
q
)
+
O
H
−
(
a
q
)
For ionization of
H
2
O
:
Δ
H
>
O
⇒ ENDOTHERMIC
On temperature increase reaction shifts forward
⇒ both
[
H
+
]
and
[
O
H
−
]
increase
⇒ pH & pOH decreases.
© examsnet.com
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