a) A medical grade diatomic gas Z2 (1000 grams) behaves non-ideally and must be kept at a temperature of 22 ℃. Given tha
Posted: Mon May 02, 2022 7:48 pm
a) A medical grade diatomic gas Z2 (1000 grams)
behaves non-ideally and must be kept at a temperature of 22 ℃.
Given that only 75000 cm3 storage tanks are available,
determine the maximum pressure allowed for storage. Assuming the
gas behaved ideally, how would your answer differ?
van der Waals constant for
‘Z2’ - a: 1.25 L2 atm mol-2 ; b:
0.0318 L mol-1
Atomic mass of Z = 17
g/mol
b) Surface sanitizers were
prepared using ethyl alcohol/water and isopropyl alcohol/water
solutions. An experiment was done to determine which composition
would be most effective and as such two solutions were formulated:
70 % v/v ethyl alcohol and 70 % v/v isopropyl alcohol. Calculate
the vapour pressure of these solutions and use your answer to
reason which combination would stay on the surface longer.
Po (Ethyl alcohol) = 12.4
kPa
Po
(Isopropyl alcohol) = 4.4 kPa Po (Water) = 2.4 kPa
behaves non-ideally and must be kept at a temperature of 22 ℃.
Given that only 75000 cm3 storage tanks are available,
determine the maximum pressure allowed for storage. Assuming the
gas behaved ideally, how would your answer differ?
van der Waals constant for
‘Z2’ - a: 1.25 L2 atm mol-2 ; b:
0.0318 L mol-1
Atomic mass of Z = 17
g/mol
b) Surface sanitizers were
prepared using ethyl alcohol/water and isopropyl alcohol/water
solutions. An experiment was done to determine which composition
would be most effective and as such two solutions were formulated:
70 % v/v ethyl alcohol and 70 % v/v isopropyl alcohol. Calculate
the vapour pressure of these solutions and use your answer to
reason which combination would stay on the surface longer.
Po (Ethyl alcohol) = 12.4
kPa
Po
(Isopropyl alcohol) = 4.4 kPa Po (Water) = 2.4 kPa