2.5 Solutions and pH
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What is cohesion?
H bonding between H2O molecules.
What is adhesion?
H bonding between H2O and other substances.
What is a solvent?
Dissolve solutes creating solvents.
What is specific heat?
Amount of energy it takes to heat up Ig of a substance by 1 degree Celsius.
What is heat of vaporization?
Energy it takes for 1g of water to evaporate.
What is concentration?
The amount of solute over volume
What does pH stand for?
Potential of Hydrogen ions.
What does pOH stand for?
Potential of Hydroxide Ion.
What makes a solution an acid?
The pH is more then 7. [H3O] > [-OH]
What makes a solution an base?
The pH is less then 7. [H3O] < [-OH].
What are the five properties of water?
• Cohesion and Adhesion • Water is the Solvent of Life • Ice is less dense than liquid water • High Specfic Heat • Heat of Vaporization
What is the pOH, [H+], and [OH-], when the pH is 8? Is it a base, acid or neutral?
pOH= 6 [H+]=10e-8 [OH-]=10e-6
What is the pH, pOH, and [H+], when the [OH-] is 10e-11? Is it acid, base, or neutral?
pH= 3 pOH=11 [H+]= 10e-3
What is a buffer?
A reservoir of [H+]
What will the buffer do, when the solution gets more acidic?
Buffers absorb the [H+] to make It more neutral.
What two ions does water occasionally split into?
Hydroxide and Hydronium
What will the buffers do when the solution gets more basic?
Buffers release more [H+] to make it more neutral.
Rank the states of matter from most dense to least dense-
Liquid>Solid>Gas