Balance the following equations by adding the stoichiometric ratios and ionic charges (include the + or - charge). Do not leave the boxes blank or it will mark you incorrect. If the stoichiometry is 1 please insert 1 in the box(es) below. You don't have to add a 1 for the charge.Calcium hydroxide is dissolved in water Ca(OH)2(s) → Ca (aq) + OH (aq)
Question
Balance the following equations by adding the stoichiometric ratios and ionic charges (include the + or - charge). Do not leave the boxes blank or it will mark you incorrect. If the stoichiometry is 1 please insert 1 in the box(es) below. You don't have to add a 1 for the charge.Calcium hydroxide is dissolved in water Ca(OH)2(s) → Ca (aq) + OH (aq)
Solution
The balanced chemical equation for the dissolution of calcium hydroxide in water is:
Ca(OH)2(s) → Ca^2+(aq) + 2OH^-(aq)
Here, the stoichiometric ratios are 1:1:2 for Ca(OH)2, Ca^2+, and OH^- respectively. The ionic charges are +2 for Ca^2+ and -1 for OH^-.
The physical state for calcium hydroxide is solid (s), and for the ions calcium and hydroxide in the solution, it is aqueous (aq).
So, when calcium hydroxide dissolves in water, it dissociates into calcium ions and hydroxide ions. The '2' in front of OH^- indicates that there are two hydroxide ions for every one calcium ion in the solution.
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