Mixtures and solutes (must know) Flashcards
Gas (solute) mixed in liquid (solvent)
= what?
give ex.
liquid
-02 in h20
A solid mixed (solute) mixed in a liquid (solvent) = what?
ex?
liquid
-LA/STP
with liquids what does decrease temp and pressure do to solubility
decrease temp=decrease solubility
no changes with pressure
with Gas what does increase temp and increase pressure do to solubility
increase temp=decrease sol
increase press= increased sol
a hypothermic pt will be (slower or faster) to b/c the gas is (increased or decreased) solubility
slower
increased
what is henry’s law
-the solubility of a gas (amt of gas that dissoles in a liquid) is directly proportional to the partial pressure of the gas in the gas phase and inverse to temp!
Henry’s law ex.
disovled gas in blood Pa02
fi02 21% = Pa02 105
fi02 100%= Pa02 500
What changes solubility
partial pressure
polarity
temp
with gasses what does temp do to solubility?
increase temp= decrease solubility
decrease temp= increase solubility
inverse!!!
the reaction you must know!!
H2CO3 (carbonic acid)
H+ + HCO3 H2C03 H20 + C02
If sevo’s B/G is 0.7 @ 37C what happens if temp decreases
b/g decrease to 0.6 b/c solubility increases
Bunson coeffecient
Oswalts coefficient
Partition coefficient
- corrolates to STP gas to liquid
- NOT correlated to STP gas to liquid
- not just gas to liquid but any phase
1%=
2%=
0.1%
=10mg/ml
=20mg/ml
=1mg/ml
**move decimal 1 place to right
50 cc lidocaine 1% with epi 1:200,000 solution
?how much lido per cc
? How much lido per container?
?How much epi per CC
10mg/ml
500mg
5mcg/ml
Epi
1: 200,000
1: 100,000
1: 400,000
1: 1,000
=5mcg/ml (0.005mg/ml)
=10mcg/ml (0.010mg/ml)
=2.5mcg/ml
=1mg/ml
