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pH is a logarithmic scale used to indicate the hydrogen ion concentration, [H+], of a solution:...

pH is a logarithmic scale used to indicate the hydrogen ion concentration, [H+], of a solution:

pH=−log[H+]

Due to the autoionization of water, in any aqueous solution, the hydrogen ion concentration and the hydroxide ion concentration, [OH−], are related to each other by the Kw of water:

Kw=[H+][OH−]=1.00×10−14

where 1.00×10−14 is the value at approximately 297 K. Based on this relation, the pH and pOH are also related to each other as

14.00=pH+pOH

Part B

Part complete

0.25 g of sodium hydroxide (NaOH) pellets are dissolved in water to make 7.0 L of solution. What is the pH of this solution?

Express the pH numerically to two decimal places.

Part C

What is the pOH of the solution in Part B?

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