Fractional | Precipitation Pogil Answer Key Best

For AgCl: ([Ag^+] = \frac1.8 \times 10^-100.010 = 1.8 \times 10^-8 , M)

The salt with the smaller (K_sp) requires a lower concentration of the common ion to reach saturation. This is the cardinal rule of fractional precipitation. Learning Objective 2: Calculating Ion Concentration at the Second Precipitation Point Question: As you continue adding AgNO₃, AgI continues to precipitate. At the moment just before AgCl begins to precipitate, what is the concentration of I⁻ remaining in solution? fractional precipitation pogil answer key best

Let’s work through that logic—because this exact calculation appears in every quality answer key. What follows is a model answer key for the most common POGIL on this topic. I’ve organized it into learning objectives, key questions, and the reasoning behind each correct answer. Learning Objective 1: Predicting the Order of Precipitation Question: A solution contains 0.010 M Cl⁻ and 0.010 M I⁻. Solid AgNO₃ is added dropwise. Using the (K_sp) values below, calculate the [Ag⁺] required to begin precipitation of each salt. Which precipitates first? For AgCl: ([Ag^+] = \frac1