Exam 4 Terms

Question 1

Buffer solution

Answer 1

aqueous solution of a mixture of…

weak acid + conj base
weak base + conj acid

It Is able to retain almost constant pH when small amount of acid/base added

Question 2

Buffer capacity

Answer 2

quantitative measure of the resistance to pH changes

max amount of strong acid or base that can be added before significant change in pH occur

Question 3

Dissociation

Answer 3

The process by which the compound is split into 2 components

Question 4

logb(xy)

Answer 4

logb(x) + logb(y)

Question 5

logb(x/y)

Answer 5

logb(x) - logb(y)

Question 6

logb(x^p)

Answer 6

p logb(x)

Question 7

Stability of powders

Answer 7

~ 24 months

Question 8

Stability of solution or suspension

Answer 8

~10 to 14 days

Question 9

Solutions are…

Answer 9

clear

Question 10

Suspensions are….

Answer 10

not clear

Question 11

Hard capsules

Answer 11

more common

2 parts, body and cap (cap fits over long body portion)

Question 12

Soft capsules

Answer 12

Gelatin film forms a complete sealed piece

cannot be opened without ruining dosage form

Question 13

Isotonic

Answer 13

solutions have same osmotic pressure as a specific body fluid

Question 14

Hypertonic

Answer 14

solutions have a higher osmotic pressure than a specific body fluid

Question 15

Hypotonic

Answer 15

solutions have a lower osmotic pressure than a specific body fluid

Question 16

Isosmotic

Answer 16

two solutions have the same osmotic pressure ( not necessarily isotonic solution)