What is the concentration of `H_3O^+` and `OH^-` ions in water at `298` K ?

Explanation

To find the concentration of `H3O^+` and `OH^-` ions in water at 298 K, we can follow these steps:

### Step 1: Understand the relationship between `H3O^+`, `OH^-`, and the ion product of water (`Kw`).
At 298 K (25 °C), the ion product of water (`Kw`) is known to be `1.0 x 10^-14`. This means:
\[ K_w = [H_3O^+][OH^-] \]

### Step 2: Recognize that pure water is neutral.
In pure water, the concentration of hydronium ions (`H3O^+`) is equal to the concentration of hydroxide ions (`OH^-`). Therefore, we can denote:
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