# Problem: At 40.°C the value of Kw is 2.92 × 10–14.c. If the hydroxide ion concentration in a solution is 0.10 M, what is the pH at 40.°C?

91% (1 ratings)
###### FREE Expert Solution

We’re being asked to determine the pH of solution 40.°C if the hydroxide ion concentration in a solution is 0.10 M, given a Kw of 2.92×10–14.

Recall that Kw is the autoionization constant of water, and is given by:

$\overline{){{\mathbf{K}}}_{{\mathbf{w}}}{\mathbf{=}}\left[{\mathbf{H}}^{\mathbf{+}}\right]\left[{\mathbf{OH}}^{\mathbf{-}}\right]}$

91% (1 ratings)
###### Problem Details

At 40.°C the value of Kw is 2.92 × 10–14.

c. If the hydroxide ion concentration in a solution is 0.10 M, what is the pH 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 .

How long does this problem take to solve?

Our expert Chemistry tutor, Alisa took 1 minute to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

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

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in . You can also practice practice problems .