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Chemical Energetics Thermochemistry Test Online MCQs

Test Name Chemical Energetics Thermochemistry Test
Subject Chemistry
Test Type MCQs
Total Question 15
Total Marks 30
Total Time 15 Mints
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Attempt Chemical Energetics Thermochemistry Test Online MCQs to increase knowledge about the Chemical energetics and Thermochemistry and their mechanism. Get preparation of all the entrance tests, competitive tests, medical tests, engineering tests, admission tests and competitive tests.

Chemical Energetics Thermochemistry Test Online MCQs

Chemistry

1. For the reaction of one mole of zinc dust with one mole of sulphuric acid in a bomb calorimeter, ∆U and w corresponds to:

 

Question 1 of 15

2. Internal energy does not include:

 

Question 2 of 15

3. The potential energy diagram for a reaction RP is given below

 

 

05

H° of the reaction corresponds to the energy:

Question 3 of 15

4. During isothermal expansion of the mole of an ideal gas from 10 atm top 1 atm at 273 K, the work done is [gas constant = 2]:

 

Question 4 of 15

5. At 80°C, distilled water (H₃O⁺) has concentration equal to 1 x 10⁻⁶ mole/liter. The value of Kw, at this temperature will be

 

Question 5 of 15

6. One gram sample of NH₄NO₃ is decomposed in a bomb calorimeter, the temperature of the calorimeter increases by 6.12 K. The heat capacity if the system is 1.23 kJ/g/deg. What is the molar heat of decomposition for NH₄NO₃?

 

Question 6 of 15

7. The enthalpy change (∆H) for the reaction, N₂(g) + 3H₂(g) 2NH₃(g) is -92.38 kJ at 298 K. The internal energy change ∆U at 298 K is:

 

Question 7 of 15

8. One mole of an ideal gas for which C= (3/2)R is heated reversibly at a constant pressure of 1 atm from 25°C to 100°C. The ∆H is:

 

Question 8 of 15

9. Combustion of glucose takes place according to the equation: C₆H₁₂O₆ + 6O₂ 6CO₂ + 6H₂O, ∆H = –72 kcal the energy required for production of 1.6g of glucose is [molecular mass of glucose is 180 gm]

 

Question 9 of 15

10. For the equilibrium H₂O(l) H₂O(g) at 1 atm and 298 K:

 

Question 10 of 15

11. The heat of reaction for: C₁₀H₈(s) + 12O₂(g) 10CO₂ (g) + 4H₂O(l) at constant volume is – 1228.2 kcal at 25°C. The heat of reaction at constant pressure and same temperature is:

 

Question 11 of 15

12. For a phase change, H₂O(l) 04 H₂O(s)

 

Question 12 of 15

13. The heat of combustion of yellow phosphorous is – 9.91 kJ and of red phosphorous is – 8.78 kJ. The heat of transition of yellow phosphorus to red phosphorus is:

 

Question 13 of 15

14. Enthalpy of neutralisation of CH₃COOH by NaOH is –50.6 kJ/mol and the heat of neutralization of a strong acid with NaOH is -55.9 kJ/mol. The value of ∆H for the ionization of CH₃COOH is:

 

Question 14 of 15

15. A gas expands isothermally against a constant external pressure of 1 atm from a volume of 10 dm³ to a volume of 20 dm³. It absorbs 300 J of thermal energy from its surrounding. The ∆U is:

 

Question 15 of 15


 

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