Chemistry questions
29404 published questions with worked solutions.
- In a reaction, CO_ 2(g) + H_ 2(g) CO_ (g) + H_2O_ (g) , H = +2.8 kJ at a constant pressure. The heat of reaction at constant...
- Bond energy of hydrogen gas is -433 kJ. How much is the bond dissociation energy of 0.5 mole of hydrogen gas? [MHT-CET 2006]
- Enthalpy of formation of two compounds x and y are -84 kJ and -156 kJ respectively. Which of the following statement is correct?...
- 1 mole of conc. HCl requires x moles of dil. NaOH for neutralization and 1 mole of conc. H_2SO_4 requires y moles of same dil....
- H_ formation of HCl is (Given : 2HCl H_2 + Cl_2 ; H = -185 kcal) [MHT-CET 2006]
- For the formation of HCl [MHT-CET 2007]
- Relation between C_P and C_V (in calories) is [MHT-CET 2007]
- Hess's law is based on [MHT-CET 2002]
- C + O_2 CO_2 ; H = -396 kJ ,mol^ -1 . Heat liberated in formation of 0.154 kg of CO_2 is [MHT-CET 2004]
- The CORRECT equation for heat of formation of CO is [MHT-CET 2003]
- Heats of formation of ethane, ethylene, acetylene and CO_2 are -136.9, -66.9, -228 and -395.39 (all in kJ) respectively. Stablest...
- The amount of heat liberated in the reaction 2PCl_5 2P + 5Cl_2 is -340 kJ. The heat of formation of PCl_5 is
- The difference between heat of reaction at constant pressure and constant volume for the reaction C_ (s) + 12 O_ 2(g) CO_ 2(g) is...
- Mathematical expression of enthalpy is [MHT-CET 2004]
- Hess's law is an application of [MHT-CET 2003]
- If the heat of formation of water is -282 kJ, H for 0.6 10^ -2 kg water is [MHT-CET 2007]
- Heat of formation of H_2O_ (l) , CO_ 2(g) and C_2H_ 4(g) are -285.0, -399.0 and 69.9 kJ/mole respectively. The heat of combustion...
- For the reaction, C_3H_ 8(g) + 5O_ 2(g) 3CO_ 2(g) + 4H_2O_ (l) At constant temperature, H - U is
- Which of the following equation show the relationship between heat of reaction at constant pressure and that at constant volume?...
- H and U are related as