Chemistry » Equilibria of Other Reaction Classes » Introducing Equilibria of Other Reaction Classes

Introducing Equilibria of Other Reaction Classes

Introducing Equilibria of Other Reaction Classes

Introducing Equilibria of Other Reaction Classes

The mineral fluorite (CaF2) is deposited through a precipitation process. Note that pure fluorite is colorless, and that the color in this sample is due to the presence of other metals in the crystal.

In the figure above, we see a close-up image of the mineral fluorite, which is commonly used as a semiprecious stone in many types of jewelry because of its striking appearance. These solid deposits of fluorite are formed through a process called hydrothermal precipitation. In this process, the fluorite remains dissolved in solution, usually in hot water heated by volcanic activity deep below the earth, until conditions arise that allow the mineral to come out of solution and form a deposit.

These deposit-forming conditions can include a change in temperature of the solution, availability of new locations to form a deposit such as a rock crevice, contact between the solution and a reactive substance such as certain types of rock, or a combination of any of these factors.

We previously learned about aqueous solutions and their importance, as well as about solubility rules. While this gives us a picture of solubility, that picture is not complete if we look at the rules alone. Solubility equilibrium, which we will explore in this tutorial, is a more complex topic that allows us to determine the extent to which a slightly soluble ionic solid will dissolve, and the conditions under which precipitation (such as the fluorite deposit in the figure above) will occur.

Do you want to suggest a correction or an addition to this content? Leave Contribution

[Attributions and Licenses]


Test Your Knowledge | Examination Past Questions


If the cost of electricity required to deposit 1 g of magnesium is N5.00, how much would it cost to deposit 10g of aluminium?

Options

A) N 10.00

B) N27.00

C) N44.44

D) N66.67

E) N33.33

Exam Body: Joint Admissions and Matriculation Board (JAMB)

View Past Question

This is a lesson from the tutorial, Equilibria of Other Reaction Classes and you are encouraged to log in or register, so that you can track your progress.

Log In

Do NOT follow this link or you will be banned from the site!