Calculate [H3O+] given [OH ] in each aqueous solution and classify each solution as acidic or basic.

(a) [OH−] = 2.1 × 10−11 M

(b) [OH−] = 7.5 × 10−9 M

(c) [OH−] = 2.1 × 10−4 M

(d) [OH−] = 1.0 × 10−2 M

Problem 66P

Calculate [H3O+] given [OH ] in each aqueous solution and classify each solution as acidic or basic.

(a)

(b)

(c)

(d)

Step by step solution

Step 1 of 4

The concentrated ions decreases when ions concentration increases.

This is because the dissociation constant or ionization constant has to remain constant.

Hence, The dissociation constant for water is given as follows.

(a)

From the given

Let’s calculate the

We have to use the ionic product constant .

...........................(1)

Rearrange the formula (1) is as follows.

....................................(2)

Now, substitute the values in the formula, then we get

Therefore,the solution is acidic.

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