At a certain temperature the hydronium ion concentration in pure water is found to be ` 1.7 xx 10 ^(-7) " mol " L^(-1) ` .What is the value of `K_w` at this temperature ?

Explanation

To find the value of \( K_w \) at a certain temperature given the hydronium ion concentration in pure water, we can follow these steps:

### Step 1: Understand the relationship between hydronium ions and hydroxide ions in pure water.
In pure water, the concentration of hydronium ions \([H_3O^+]\) is equal to the concentration of hydroxide ions \([OH^-]\). This is due to the nature of water being neutral, which means:
\[ [H_3O^+] = [OH^-] \]

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