Term
|
Definition
a substance that donates a proton |
|
|
Term
|
Definition
a substance which accepts a proton. |
|
|
Term
Can water donate a proton or accept a proton? |
|
Definition
|
|
Term
Strong acids & bases ______ completely in water |
|
Definition
|
|
Term
What happens to a weak acid in water? |
|
Definition
Weak acids donate a proton to water to form hydronium (H3O+) ions |
|
|
Term
What happens to a weak base in water? |
|
Definition
Weak bases accept a proton to form a conjugate acid |
|
|
Term
At equilibrium, dissociation occurs at a ______ rate |
|
Definition
|
|
Term
|
Definition
Describes the rate of a reaction, it's the dissociation constant |
|
|
Term
The negative log of Ka is known as? |
|
Definition
|
|
Term
As pKa increases, what happens to Ka? |
|
Definition
|
|
Term
Dissociation constant for bases? |
|
Definition
|
|
Term
Henderson-Hasselbalch pH equation |
|
Definition
pKa + log [conjugate base]/[weak acid] |
|
|
Term
% Ionization for weak acids = |
|
Definition
|
|
Term
Important property of a buffer |
|
Definition
Resists large pH fluctuations upon addition of relatively large quantities of strong acid or strong base |
|
|
Term
|
Definition
the concentration of each component of the buffer pair |
|
|
Term
|
Definition
It is the range at which the buffer is most effective in resisting changes of pH. |
|
|
Term
What is the composition of a buffer? |
|
Definition
|
|
Term
Dihydrogen phosphate ions (H2PO4-) act as a?? |
|
Definition
|
|
Term
Hydrogen phosphate ions (HPO42-) act as a? |
|
Definition
|
|
Term
When the buffered pH is close to pKa, what happens to buffering capacity? |
|
Definition
|
|
Term
How is buffering capacity expressed? |
|
Definition
The moles of NaOH to increase pH by one unit or the moles of HCl to decrease pH by one pH unit |
|
|
Term
What happens to buffering capacity as the moles of a buffer increases? |
|
Definition
Buffering capacity increases |
|
|
Term
Is pH indicator a weak acid or a base? |
|
Definition
|
|
Term
For labs 2-11 we wash glassware with? |
|
Definition
|
|
Term
|
Definition
Solubility is the property of a solid, liquid, or gaseous chemical substance called solute to dissolve in a solid, liquid, or gaseous solvent to form a homogeneous solution of the solute in the solvent |
|
|
Term
|
Definition
|
|
Term
Generally which is less soluble? Undissociated form or it's salt? |
|
Definition
|
|