MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Bioprocess Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Calculate the work done in the following reaction when 1 mol of SO2 is oxidised at constant pressure at 50 C. State whether work is on the system or by the system.2SO2(g) + O2(g) 2 SO3(g) |
| A. | nGiven: Temperature = T = 5 C = 50 + 273 = 323 K , R = 8.314 J K<sup>-1</sup> mol<sup>-1</sup> , |
| B. | 1435 kJ |
| C. | 1343 kJ |
| D. | 1345 kJ |
| E. | 1433 kJ |
| Answer» C. 1343 kJ | |
| 2. |
Refer to Q9 and answer what is the enthalpy change for the reaction of 100.0 g of nitrogen with excess oxygen? |
| A. | 1164 kJ |
| B. | 1190 kJ |
| C. | 1194 kJ |
| D. | 1160 kJ |
| Answer» B. 1190 kJ | |
| 3. |
Consider the reaction: N2 + O2 2NO; H = +180.6 kJ |
| A. | nwhat is the enthalpy change for the formation of one mole of nitrogen (II) oxide? |
| B. | 96.80 kJ |
| C. | 95.30 kJ |
| D. | 96.50 kJ |
| E. | 95.50 kJ |
| Answer» C. 95.30 kJ | |
| 4. |
Calculate H for the reaction:N2 + 3H2 2NH3 |
| A. | n(The bond dissociation energy for N-N is 163 kJ/mol; H-H is 436 kJ/mol; N-H is 391 kJ/mol). |
| B. | 867 |
| C. | 895 |
| D. | 847 |
| E. | 875 |
| Answer» E. 875 | |
| 5. |
Calculate the H value of the reaction:HCl + NH3 NH4Cl |
| A. | n( H values for HCl is -92.30; NH<sub>2</sub> is -80.29; NH<sub>4</sub>Cl is -314.4). |
| B. | 141.8 |
| C. | 121.8 |
| D. | 131.8 |
| E. | 151.8 |
| Answer» B. 141.8 | |
| 6. |
Calculate H if a piece of aluminum with a specific heat of 0.9 kJ-kg-1-K-1 and a mass of 1.6 kg is heated from 286 K to 299 K. |
| A. | 16.52 kJ |
| B. | 17.72 kJ |
| C. | 18.72 kJ |
| D. | 15.52 kJ |
| Answer» D. 15.52 kJ | |
| 7. |
Calculate the H of the following reaction: CO2(g) + H2(g)O -> H2CO3(g) if the standard values of Hf are as follows: CO2(g) : -393.509 KJ/mol, H2O(g): 241.83 KJ/mol, and H2CO3(g) : 275.2 KJ/mol. |
| A. | +360.139 KJ |
| B. | +350.129 KJ |
| C. | 360.139 KJ |
| D. | -350.129 KJ |
| Answer» B. +350.129 KJ | |
| 8. |
If a calorimeter s H is +2001 Joules, how much heat did the substance inside the cup lose? |
| A. | +2000 J |
| B. | 2001 J |
| C. | 2000J |
| D. | + 2001 J |
| Answer» C. 2000J | |
| 9. |
Calculate H if a piece of metal with a specific heat of 0.98 kJ-kg-1-K-1 and a mass of 2kg is heated from 22 C to 28 C. |
| A. | 11.66 kg |
| B. | 11.56 kg |
| C. | 11.76 kg |
| D. | 11.26 kg |
| Answer» D. 11.26 kg | |
| 10. |
Hydrogen peroxide decomposes according to the following thermochemical reaction:H2O2 (l) H2O (l) + 1/2 O2(g); H = -98.2 kJ |
| A. | nCalculate the change in enthalpy, H, when 1.00 g of hydrogen peroxide decomposes. |
| B. | -2.89 kJ |
| C. | -2.80 kJ |
| D. | -2.00 kJ |
| E. | -2.85 kJ |
| Answer» B. -2.89 kJ | |
| 11. |
At what standard conditions does the heat of combustion calculated? |
| A. | 26 C, 1 atm |
| B. | 25 C, 0.5 atm |
| C. | 25 C, 1 atm |
| D. | 26 C, 0.5 atm |
| Answer» D. 26 C, 0.5 atm | |