Download Introductory Water Potential Worksheet Write Symbol Write Value (A

Introductory Water Potential Worksheet
Write Symbol
Pressure
Potential
Ionization
Constant
Molar
Concentration
Temperature
(K)
Pressure
Constant
Solute
Potential
Solute
Potential
Solute
Potential
Write Symbol
Ψp
Write Value
(A)
0
Ψp
Write Value
(B)
0
i
1
i
2
C
2.5
C
2.5
T
298
T
298
R
0.083
R
0.083
Ψs
-iCRT
Ψs
-iCRT
Calculations:
(1)(2.5)(0.083)(298)
= - 6.1835 bars
Answer:
-6 bars
Calculations:
(2)(2.5)(0.083)(298)
= - 123.67 bars
Answer:
-124 bars
1. Ψ = Ψp + Ψs (water potential = pressure potential + solute potential)
2. Ψ beaker A = 0 + -6 = -6
Ψ beaker B = 0 + -124 = -124
3. The solution of NaCl; beaker B
4. A to B
5. –iCRT = -(1)(3.5)(0.083)(298) = -86.569 = -87 bars
6. –ICRT = -(2)(0.5)(0.083)(298) = -24.734 = -25 bars
7. Cell  beaker
8. 3 hours later, the cell would become hypertonic to the solution because it has greater free
energy than the cell.
I.
a. A
b. C
c. B
d. C
e. C
f. A
II)
a.
b.
c.
III)
a.
water to cell
When the water and cell are isotonic
Ys = -4 Yp = 4
cell to solution
b.
c.
d.
e.
IV)
a.
b.
c.
d.
when the cell and solution are isotonic
it will be shriveled up
0
0
cell to solution
0
-2
2
How does sugar or salt curing preserve meat?
Sugar and salt work to cure meat using osmosis. The sugar and salt draw the water out of the
meat
Why will your favorite plant likely die if you apply twice the recommended amount of
fertilizer?
If you put twice the amount of fertilizer needed on your plant, then environment surrounding
the plant will be hypertonic to the plants roots. As a result, osmosis will occur, and water will be
drawn out from the roots of the plant. This causes the plant to die.