Factors Influencing Solubility

The video explores factors affecting solubility, focusing on the common ion effect, pH changes, and complex ion formation. It explains how the presence of a common ion decreases solubility, how pH affects solubility of compounds with basic anions, and how complex ions can increase solubility. The video also briefly touches on amphoterism, where substances can dissolve in both strong acids and bases.

Which of the following is NOT a factor affecting solubility discussed in the video?

• pH of the solution

• Temperature

• Formation of complex ions

• Common ion effect

What happens to the solubility of calcium fluoride when sodium fluoride is added to the solution?

• It increases

• It decreases

• It remains the same

• It first increases then decreases

According to Le Chatelier's principle, what occurs when more fluoride ions are added to a solution of calcium fluoride?

• The equilibrium remains unchanged

• The equilibrium shifts to the right

• The equilibrium shifts to the left

• The solubility of calcium fluoride increases

Tags

NGSS.HS-PS1-5

How does the addition of a strong acid affect the solubility of magnesium hydroxide?

• It first decreases then increases the solubility

• It increases the solubility

• It has no effect on the solubility

• It decreases the solubility

Tags

NGSS.HS-PS1-5

What is the effect of lowering the pH on the solubility of a compound containing a basic anion?

• The solubility first increases then decreases

• The solubility remains the same

• The solubility increases

• The solubility decreases

What is a complex ion?

• A metal ion bonded to a single substance

• A non-metal ion bonded to one or more substances with lone pairs

• A metal ion bonded to one or more substances with lone pairs

• A non-metal ion bonded to a single substance

How does the formation of complex ions affect the solubility of a salt?

• It has no effect on the solubility

• It decreases the solubility

• It increases the solubility

• It first decreases then increases the solubility

What is the rule of thumb for the number of ligands a metal ion can attract?

• Double its charge

• Triple its charge

• Equal to its charge

• Half its charge

Which of the following is an example of an amphoteric substance?

• Sodium chloride

• Calcium carbonate

• Aluminum hydroxide

• Magnesium hydroxide

What does amphoteric mean?

• Can only act as an acid

• Can only act as a base

• Can act as either an acid or a base

• Is neutral in all reactions