-12 M? What is the [H 30 +] in a solution with [OH ] = 1 x 10
1 x 10-12 M
O 1x102 M
1x 10-7
0 1 x 10-8
1 x 10-2

1 × 10⁻² M

Explanation:

What is the [H₃O⁺] in a solution with [OH⁻] = 1 × 10⁻¹² M?

Step 1: Given data

Hydroxile ion concentration ([OH⁻]): 1 × 10⁻¹² M

Step 2: Calculate the concentration of the hydronium ion

Let's consider the self-dissociation of water.

2 H₂O(l) ⇄ H₃O⁺(aq) + OH⁻(aq)

We can calculate the concentration of the hydronium ion using the ion product of water.

Kw = 10⁻¹⁴ = [H₃O⁺] [OH⁻]

[H₃O⁺] = 10⁻¹⁴ / [OH⁻] = 10⁻¹⁴ / 1 × 10⁻¹² = 1 × 10⁻² M

the answer is option a.