Module 7: Aqueous Solutions, Acids & Bases Flashcards
What is specific heat? Whys is the high specific heat of water important to living organisms?
The transfer of heat of one substance to another. Example the pot on the stove with water inside it. It is important because buffers in our blood will not allow us to over heat.
What does it mean to say that a solution is aqueous?
It is a water based solution has 70% water.
When water molecules ionize, what are the resulting molecules called?
Hydronium H3O+ & Hydroxide OH-
What makes a solution acidic?
having a greater concentration of H+
What makes a solution alkaline?
having a greater concentration of OH-
What is an Acid?
is a substance that increases the concentration of H+ in a solution.
What is a Base?
is a solution that decreases the concentration of H+ in a solution.
Strong Acid
Substances that increase the concentration of H+ in a solutions are acids ————> Strong acid dissociates Completely in water.
Weak Acid
Substances that increase the concentration of H+ in a solution are acids. Weak acid partially dissociates in water (goes both way)
Is an important buffer in living organisms?
Carbonic Acid
Strong Bases
Substances that decrease the concentration of H+ in a solution are bases. ——–> They completely dissociates in water.
Weak Bases
Substances that decrease the concentration of H+ in a solution are bases. (Goes Both Ways) Weak base usually attracts H+ ions in water and reaches equilibrium
What is PH? What does it tell you about a solution?
Potential Hydrogen-indicates the acidity of a solution. Range 0-14 water is 7. Acids have a PH less than 7. Bases have a PH greater than 7.
How does acidification of the earth’s ocean can lead to loss of marine life?
So more acidfication leads to an increase in H+ and bicarbonate, and a decrease in carbonate, and a decline in coral reefs.
