Dioxane, C 4 H 8 O 2 , is a nonelectrolyte; acetic acid, HC 2 H 3 O 2 , is a wea

Question

Dioxane, C4H8O2, is a nonelectrolyte; acetic acid, HC2H3O2, is a weak electrolyte; and calcium hydroxide, Ca(OH)2, is a strong electrolyte. What are the solute particles present in aqueous solutions of each compound? (Select all that apply.)

H+

C4H7O2-

C4H8O2

O2-

OH-

HC4H8O2+

HC2H3O2+

OH -

O2-

C2H3O2-

HC2H3

O2

H+

OH-

H+

CaOH+

Ca(OH)2

Ca2+

Ca(OH)3-

If 0.1 mol of each compound is dissolved in solution, which one contains about 0.3 mol of solute particles, which contains 0.1 mol of solute particles, and which contains somewhere between 0.1 and 0.2 mol of solute particles?

H+

C4H7O2-

C4H8O2

O2-

OH-

HC4H8O2+

HC2H3O2+

OH -

O2-

C2H3O2-

HC2H3

O2

H+

OH-

H+

CaOH+

Ca(OH)2

Ca2+

Ca(OH)3-

Explanation / Answer

0.3 mole solute particles --------------> calcium hydroxide (Ca(OH)2 = Ca2+ + 2OH-)

0.1 mol solute particles ----------------> dioxane (because it is non electrolyte, i.e does not dissociate)

between 0.1 and 0.2 mol solute particles ------------->acetic acid

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