Basic Chemical Engineering Mock Test 8

1. Heat of formations of A, B, C, and D, are 5 J, 8 J, 2 J, and 15 J respectively, what is the heat of reaction 3A + B -> 3C + 2D?

2. In the reaction 2H₂ + O₂ -> 2H₂O, if the heat liberated is 50 J, what is the heat of formation of H₂O?

3. 2 Kg of water (C_P = 0.15 J/Kg^oC) is pumped to a height of 0.1 m, work done by the motor is 10 J/Kg, and heat liberated by it is 5 J/Kg, what is the final temperature of water if the initial temperature was 27^oC?

4. For an ideal gas isochoric process, what is the work done by the gas from 2 Pa to 1 Pa?

5. What is the enthalpy of reaction for CH₄ + 2O₂ -> CO₂ + 2H₂O, if the conversion of CH₄ is 50%, and heat of formation of CH₄, O₂, CO₂, and H₂O are 10 J, 0, 6 J and 4 J?

6. What is the enthalpy change of a reaction at 45^oC, if the enthalpy of reactant at 45^oC and 25^oC are 10 J and 6 J, and enthalpy of product at 45^oC and 25^oC are 15 J and 8 J, and the enthalpy change of reaction at 25^oC is 10 J?

7. For an ideal gas isothermal process what is the work done by the gas from 1 m³ to 2 m³ at 300 K?

8. What is the enthalpy of a reaction, if the standard heat of formation of a compound is 15 J, sensible heat of the compound is 25 J, and latent heat of the compound is 10 J?

9. The specific volume of a gas is 5 m³/Kg, at 10 Pa, H = 50 J/Kg and at 20 Pa, H = 100 J/Kg, what is the heat transferred to the system?

10. Enthalpy of a stream is which function of temperature and pressure?