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Assertion (A): The Heat of ionisation o...

Assertion (A): The Heat of ionisation of water is equal to the heat of neutralistion of a strong acid with a strong base.
Reason (R ) : Water ionises to a very small extent while `H^(o+)` ions from from an acid combine very rapidly with `overset(Theta)OH` from a base to form `H_(2)O`.

A

If both (A) and (R ) are correct, and (R ) is the correct explanation for (A).

B

If the both (A) and (R ) are correct, but(R ) is not a correct explanation for (A).

C

If (A) is correct, but (R ) is incorrect.

D

If (A) is incorrect, but (R ) is correct.

Text Solution

Verified by Experts

Dissociation of water is `H_(2)O hArr H^(o+) +overset(Theta)OH` is reverse of the heat of neutralisation and the value of heat is equal but sign is reverse.
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