Chemistry 11 Chapter 7 Thermochemistery Test 3

Chemistry 11 Chapter 7
Thermochemistery
Test 3

1. Total energy of a system is called?

a) P.E+K.E
b) P.E+heat energy
c) K.E+heat energy
d) P.E+mechanical energy

2. Which is true for spontaneous endothermic reaction?

a) Change in H<0
b) Change in G<0
c) Change in S>0
d) Change in G>0

3. If change in H is less than zero then reaction will be?

a) Endothermic
b) Exothermic
c) May or may not be
d) None of these

4. Unit of heat in SI system is?

a) KJ
b) Kcal
c) Cal
d) GJ

5. A reaction has values of change in H and change in S which are both positive the reaction?

a) Cannot be spontaneous
b) Spontaneity is temprature dependent
c) Has an increase in free energy
d) Is exothermic

6. Which one is not a state function?

a) Internal energy
b) Gibbs free energy
c) Enthalpy
d) Work

7. If enternal energy of the system is increased?

a) Change in state of system can occur
b) Temprature of the system may rise
c) Chemical reaction can take place
d) All of these

8. Study about energy of a chemical system?

a) Thermochemical
b) Thermodynamics
c) Kinetics
d) Stoichiometry

9. The envoirment in which a system is studied is called?

a) State
b) Phase
c) Surrounding
d) State function

10. Any thing which depends upon initial and final state of system is called?a) Envoirment
b) Surrounding
c) System
d) State function

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