Question

Calculate the ionic strength and activity coefficient (g) of MgF2, given that Ksp = 6.4E-9.

a) Ionic strength = Ksp / g; Activity coefficient = g / Ksp.
b) Ionic strength = √Ksp; Activity coefficient = Ksp / √g.
c) Ionic strength = -log(Ksp); Activity coefficient = log(g).
d) Ionic strength = 2 * Ksp; Activity coefficient = Ksp / 2.

Answer 1

The ionic strength of MgF2 is calculated using the formula Ionic strength = Ksp / g. The activity coefficient is calculated using the formula Activity coefficient = g / Ksp.

Step-by-step explanation:

To calculate the ionic strength and activity coefficient of MgF2, we need to use the given solubility product constant (Ksp) of 6.4E-9.

The correct formula is a) Ionic strength = Ksp / g; Activity coefficient = g / Ksp.

The ionic strength is calculated by dividing Ksp by the activity coefficient (g).

Therefore, the ionic strength of MgF2 is 6.4E-9 / g, and the activity coefficient is g / 6.4E-9.