Relation between Cp and Cv
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Q.
The value of R (Universal gas constant) in SI unit is
0.008206 L atm/mol/K
0.08206 L atm/mol/K
0.008206 L mol/atm/K
0.08206 L mol/atm/K
Q. N moles of an ideal monatomic gas is heated from35^° C to 55^° C at constant volume and 900 J of heatis absorbed. If same gas is heated at constantpressure from 55^° C to 95 C, then the heat requiredwill be(1) 1000 J(2) 1500 J(4) 3000 J(3) 2000 J
Q. 50 cal of heat is required to raise the temperature of 1 mole of an ideal gas from 20C to 25C, while the pressure of the gas is kept constant. The amount of heat required to raise the temperature of the same gas through same temperature range at constant volume is (R 2 cal/mol/K) (1) 70 cal (2) 60 cal (3) 40 cal (4) 50 cal
Q. A certain amount of an ideal monatomic gas needs 20 J of heat energy to raise its temperature by 10^° C at cons†an t pressure. The heat needed for the same temperature rise at cons†an t volume will be
Q. 49.One mole of an ideal gas at temperature T1 K expand slowly according to the law of P/V is constant in the final temperature is T2 K the work done by the gas is
Q. 11. A gas in an open container is heated from 27 degree C to 127 degree celsius. The fraction of the original amount of gas remaining in the container would be ?
Q. The value of γ on monoatomic, diatomic and triatomic gases is ___, ___ and ___ respectively.
- 1.66, 1.40, 1.33
- 1.33, 1.40, 1.66
- 2, 1.66, 1.5
- None of these
Q. explain me the relationship between cp and cv for an ideal gas??
Q. For hydrogen gas, Cp−Cv = a and for nitrogen gas Cp−Cv = b, then the relation between a and b is:
(where Cp and Cv are specific heats defined per gram)
(where Cp and Cv are specific heats defined per gram)
- a=16b
- b=16a
- a=b
- a=14b
Q. One mole of an ideal gas at an initial temperatureof T K does 6R joules of work adiabatically. If theratio of specific heats of this gas at constantpressure and at constant volume is 5/3, the finaltemperature of gas will be(2) (T- 2.4) K(4) (T-4)K(3) (T + 4) K
Q. 50.The pressure P of an ideal diatomic gas various with absolute temperature T as shown in figure. What is The molar heat capacity of gas during this process ?
Q. The molar heat capacity of a gas at constant volume is Cv. If n moles of the gas undergo ΔT change in temperature, its internal energy will change by nCv ΔT
- in any process which is not adiabatic
- only if the change of temperature occurs at constant volume
- only if the change of temperature occurs at constant pressure
- in any process
Q. Cp is always greater than Cv.
False
True
Q. for two mole of diatomic gas work done at constant pressure is w. the heat supplied at constant volume for same temperature rise is?
Q.
The value of R (Universal gas constant) in SI unit is
0.008206 L atm/mol/K
0.008206 L mol/atm/K
0.08206 L atm/mol/K
0.08206 L mol/atm/K
Q. Specific heat of a solid element is 0.1cal/goC and its equivalent weight is 31.8. Its exact atomic weight is :
- 31.8
- 318
- 63.6
- 95.4
Q. 28.50 cal of heat is required to raise the temperature of one mole of an ideal gas from 20 to 25degree C, while the pressure of the gas is kept constant. The amount of heat required to raise the temperature of the same gas through same temperature range at constant volume is (R=2cal/mol/K)
Q. At what temperature the average speed of gas molecules will be double that at 27degree celsius
Q. { A sample of gas in a box is at pressure }P_0 and }}{ temperature }T_0 . If number of molecules is doubled }} and total kinetic energy of the gas is kept constant, } then final temperature and pressure will be
Q. To raise the temperature of 1 mole of a diatomic gas by 1 ∘C at constant pressure, the required amount of heat is 120 cal.
The amount of heat which goes as the internal energy is almost equal to:
The amount of heat which goes as the internal energy is almost equal to:
- 82.5 cal
- 80.2 cal
- 85.7 cal
- 58.8 cal
