Chemistry questions
29404 published questions with worked solutions.
- When total disorder increases, the change is said to be _____
- If in a container neither mass nor heat exchange occurs, then it constitutes a _____ [AFMC 2003]
- One mole of an ideal gas at 300 K is expanded isothermally from an initial volume of 1 litre to 10 litres. The change in energy...
- The work done during the expansion of a gas from a volume of 4 dm^3 to 6 dm^3 against a constant external pressure of 3 atm is (1...
- The internal energy change when a system goes from state A to B is 40 kJ/mole. If the system goes from A to B by a reversible...
- How internal energy will change due to removal of heat and work from the system? [MH CET 2013]
- Which of the following expressions represents the first law of thermodynamics? [MP PET 1996, AFMC 2000, BHU 1997, AMU 1999, KCET...
- If H is the change in enthalpy and U is the change in internal energy accompanying a gaseous reaction, _____ [CBSE PMT 1990]
- Which of the following equations show the relationship between heat of reaction at constant pressure and that at constant volume?...
- If the heat of combustion of carbon monoxide at constant volume and at 17 ^ is -283.3 kJ, then its heat of combustion at constant...
- For the reaction, C_3H_ 8(g) + 5O_ 2(g) 3CO_ 2(g) + 4H_2O_ (l) At constant temperature, H - U is _____
- Enthalpy (H) is equal to _____ [MH CET 2004]
- H_2 + Cl_2 2HCl ; H = -184 kJ. Then what is the amount of energy absorbed when 0.365 kg of HCl is formed?
- For the formation of HCl, _____ [MH CET 2007]
- The difference between heats of reaction at constant pressure and at constant volume for the reaction 2C_6H_ 6(l) + 15O_ 2(g)...
- The relation between U and H is _____ [MP PET 1992, MP PMT 1996, MP PET/PMT 1998, AFMC 1999]
- For the reaction, A_ (s) + 3B_ (g) 4C_ (s) + D_ (l) , H and U are related as _____ [Orissa JEE 2004]
- The value of H - U for the following reaction at 27 ^ will be _____ 2NH_ 3(g) N_ 2(g) + 3H_ 2(g) [Kerala (Med.) 2002]
- The thermodynamic process where no change in enthalpy takes place is _____ [MH CET 2001]
- For the reaction, CH_3COOH_ (l) + 2O_ 2(g) 2CO_ 2(g) + 2H_2O_ (l) at 25 ^ and 1 atm. pressure, H = -874 kJ. Then the change in...