What are the respective concentrations (M)of K⁺ and PO₄^3- afforded by dissolving 0.800 mol K₃PO₄ in water and diluting to 1.63 L? A)0.800 and 0.800 B)0.491 and 0.491 C)0.800 and 0.491 D)1.44 and 0.491 E)0.489 and 0.163

Question

Quizplus · Accepted Answer

When K₃PO₄ dissolves, it dissociates into 3 K⁺ ions and 1 PO₄³⁻ ion. The concentration of K⁺ is 3 times that of K₃PO₄, and the concentration of PO₄³⁻ is the same as K₃PO₄. Therefore, [K⁺] = 3 * (0.800 mol / 1.63 L) = 1.44 M and [PO₄³⁻] = 0.800 mol / 1.63 L = 0.491 M.

What Are the Respective Concentrations (M)of K+ and PO43- Afforded

What Are the Respective Concentrations (M)of K⁺ and PO₄^3- Afforded