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`.

Options

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.

Explanation

To solve the question, we need to analyze both the assertion and the reason provided.

### Step-by-Step Solution:

1. **Understanding the Assertion (A)**:
- The assertion states that the heat of ionization of water is equal to the heat of neutralization of a strong acid with a strong base.
- Ionization of water refers to the process where water dissociates into hydrogen ions (H⁺) and hydroxide ions (OH⁻).
- Neutralization is the reaction between an acid (which produces H⁺ ions) and a base (which provides OH⁻ ions) to form water.
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