Question

If a 0.7 M solution of Ca(OH)2 dissociates completely in water, what is the final [OH-]?

Answer 1

Answer:

1.40 M [OH⁻]

Explanation:

This compound dissociates into 3 ions, but since we are asked about [OH⁻], it's only 2. Therefore, multiply the molarity of the solution by the number of ions that [OH⁻] dissociates into:

2 × 0.70 M = 1.40 M

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