# Problem: The ionization constant for water (Kw) is 2.9 × 10−14 at 40 °C. Calculate [H3O+], [OH−], pH, and pOH for pure water at 40 °C.

###### FREE Expert Solution
96% (415 ratings)
###### FREE Expert Solution

In neutral solution, [H3O+] = [OH-] , pH = pOH

96% (415 ratings)
###### Problem Details

The ionization constant for water (Kw) is 2.9 × 10−14 at 40 °C. Calculate [H3O+], [OH], pH, and pOH for pure water at 40 °C.

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Ka and Kb concept. You can view video lessons to learn Ka and Kb Or if you need more Ka and Kb practice, you can also practice Ka and Kb practice problems .

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Based on our data, we think this problem is relevant for Professor Esfandiari's class at SJSU.

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