PHA 317 Quiz 2 UPDATED ACTUAL Questions and CORRECT Answers
Compute the vapor pressure of water at 1.95 atm
120ºC. The vapor pressure at 100ºC is 1 atm
and the ∆Hv is 9720 calories/mole.
The contents of an aerosol are at a 2.5 atm
pressure of 2 atms at 25ºC. What happens
to the pressure when the aerosol is stored
at 100ºC? Given the volume of the aerosol
container is 0.05 L.
A substance which is bound together by low heat of fusion and low melting point
weak forces is said to have:
It is essential not to overheat cocoa butter, I, III, and IV are correct
which is used as a suppository base during
the preparation of the suppository by
fusion method. Such suppositories must be
stored in the refrigerator. Why?
I. The stable beta form of cocoa butter
melts in a narrow temperature range of
34º-36º
II. Overheating destroys the stable beta
form which is not regained completely on
solidification.
III. Melting above the 35ºC and chilling in
the freezer help getting solidified into
stabilized beta form.
IV. Melting at 34.5ºC (not beyond 35ºC)
and supercooling to about 15ºC provides
stable beta form
Compute the vapor pressure of water at 1.95 atm
120ºC. The vapor pressure at 100ºC is 1 atm
and the ∆Hv is 9720 calories/mole.
The contents of an aerosol are at a 2.5 atm
pressure of 2 atms at 25ºC. What happens
to the pressure when the aerosol is stored
at 100ºC? Given the volume of the aerosol
container is 0.05 L.
A substance which is bound together by low heat of fusion and low melting point
weak forces is said to have:
It is essential not to overheat cocoa butter, I, III, and IV are correct
which is used as a suppository base during
the preparation of the suppository by
fusion method. Such suppositories must be
stored in the refrigerator. Why?
I. The stable beta form of cocoa butter
melts in a narrow temperature range of
34º-36º
II. Overheating destroys the stable beta
form which is not regained completely on
solidification.
III. Melting above the 35ºC and chilling in
the freezer help getting solidified into
stabilized beta form.
IV. Melting at 34.5ºC (not beyond 35ºC)
and supercooling to about 15ºC provides
stable beta form
