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Physical Chemistry
For the first two lines of Balmer series, identify the value of N1 and N2.
Physical Chemistry
. A human being weighing 75kg consumes 6 million J of sadza per day. Assume the sadza is all glucose and only aerobic respiration occurs to release 2,8 million J/mol of energy stored in ATP. The density of the man is 1000kg/m3.Find the man’s metabolic rate in terms of oxygen moles consumed per m3 of the person per second (mol/ m3/s).
Physical Chemistry
Aluminium atoms can each contribute three electrons to metallic bonding. Suggest how the boiling point of aluminium will compare with the boiling point of magnesium
Physical Chemistry
In the following equilibrium, predict the direction of shift of equilibrium for each
condition listed below. Justify giving reasons.
N2(g) + 3H2 (g) ⇄ 2NH3 (g) + 92 kJ
i) Addition of H2
ii) increased pressure
iii) lowering of temperature.
condition listed below. Justify giving reasons.
N2(g) + 3H2 (g) ⇄ 2NH3 (g) + 92 kJ
i) Addition of H2
ii) increased pressure
iii) lowering of temperature.
Physical Chemistry
In normal reaction conditions, chlorobenzene does not react with NaOH, but 1-chloro-4-nitrobenzene reacts with NaOH in these conditions. Explain.
Physical Chemistry
Arrange the following carbonyl compounds in the order of their favourability for
formation of nitriles:
CH3CH2CHO, CH3COCH3, HCOH and PhCOCH3
Justify your answer.
formation of nitriles:
CH3CH2CHO, CH3COCH3, HCOH and PhCOCH3
Justify your answer.
Physical Chemistry
Which one of the following would undergo faster SN2 reaction? Explain
CH3 – CH = CH – Cl
or
CH3CH2CH2 – Cl
CH3 – CH = CH – Cl
or
CH3CH2CH2 – Cl
Physical Chemistry
State Dalton's law of partial pressure? Derive it's mathematical form
Physical Chemistry
Calculate Vr, Hr, and Sr for the following using appropriate generalized correlation:
Pure CO2 at 400k and 200 bar.
A mixture of 40% ethane and 60% ethylene.
Pure CO2 at 400k and 200 bar.
A mixture of 40% ethane and 60% ethylene.
Physical Chemistry
One mole of an ideal gas, cp = (7/2)R and Cv =(5/2)R is compressed adiabatically in a piston cylinder device from 2 bar and 25℃ to 7 bar. The process is irreversible and requires 35% more work than a reversible, adiabatic compression from the same initial state to the final pressure. What is entropy change of the gas?
