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**Problem**: Calculate [H3O+] and [OH−] for each of the following solutions.a. pH = 8.57 b. pH = 2.86

###### FREE Expert Solution

###### FREE Expert Solution

We’re being asked to calculate [H_{3}O^{+}] and [OH^{−}] for each of the following solutions.

a. pH = 8.57

b. pH = 2.86

When **pH or pOH are given**:

• The **H ^{+} or H_{3}O^{+} concentration** can be calculated from pH using the following equation:

$\overline{)\left[{\mathbf{H}}^{\mathbf{+}}\right]{\mathbf{=}}{\mathbf{10}}^{\mathbf{-}\mathbf{pH}}}$

• The **OH ^{-} concentration** can be calculated from pOH using the following equation:

$\overline{)\left[{\mathbf{OH}}^{\mathbf{-}}\right]{\mathbf{=}}{{\mathbf{10}}}^{\mathbf{-}\mathbf{pOH}}}$

• The relationship between **[H ^{+}] and [OH^{-}]** is connected by the following equation:

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

K_{w} = autoionization constant of water

**K _{w} = 1.0x10**

^{-14}at T = 25°C

###### Problem Details

Calculate [H_{3}O^{+}] and [OH^{−}] for each of the following solutions.

a. pH = 8.57

b. pH = 2.86

Frequently Asked Questions

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 pH and pOH concept. You can view video lessons to learn pH and pOH Or if you need more pH and pOH practice, you can also practice pH and pOH practice problems .

How long does this problem take to solve?

Our expert Chemistry tutor, Alisa took 2 minutes 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 Driscoll's class at GVSU.