Abottle is labeled as 2.5 m ca(oh)2. what is the concentration of ca2+?

2.5 mol·L⁻¹  

Explanation:

                        Ca(OH)₂(aq) ⟶ Ca²⁺(aq) + 2OH⁻(aq)

I/mol·L⁻¹ :               2.5                    0                    0

C/mol·L⁻¹:              -2.5                 +2.5               +5.0

F/mol·L⁻¹:                 0                    2.5                 5.0

Ca(OH)₂ is a strong electrolyte. It dissociates completely in solution to form ions

Initial

Assume you dissolve 2.5 mol of Ca(OH)₂ in enough water to make 1 L of solution.

In the instant before it dissociates, you have a 2.5 mol·L⁻¹ solution of Ca(OH)₂ and no Ca²⁺ ions.

Change

The Ca(OH)₂ is dissociates completely into ions. You lose 2.5 mol of Ca(OH)₂ and form 2.5 mol of Ca²⁺.

Final

You end up with no formula units of Ca(OH)₂ and 2.5 mol of Ca²⁺.

the answer is the first option

explanation:

just googled it m8. not that hard

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