Thermochemistry Set 2

Results

#1. In endothermic reactions, the heat content of the

products is more than that of reactants

reactants is more than that of products

both (a) and (b)

None of above

#2. Hess’s law is also called

first law of thermodynamics

second law of thermodynamics

first law of thermochemistry

second law of thermochemistry

#3. Pressure – volume work is

P D v

F x d

h D v

H + p v

#4. Kinetic energy of molecules is due to

rotational energy

vibrational energy

translational energy

all of these

#5. The condition for standard enthalpy change is

1 atm 30oC

1 atm 0oC

1 atm 25oC

760 atm 25oC

#6. The unit of enthalpy change is

calorie

joule

volt

coulomb

#7. The sum of all kinds of a system is ions or molecules of a system is

vibrational energy

potential energy

kinetic energy

internal energy

#8. An endothermic reaction is one is which

enthalpy of reactants and products are same

enthalpy of products is greater than reactant

enthalpy of products is lesser than reactants

heat is evolved from system

#9. Glass calorimeter is used to determine

enthalpy of combustion

enthalpy of reaction

pressure–volume work

none of above

#10. Born–Haber cycle is used to calculate

enthalpy of combustion

lattice energy of ionic compounds

both a and b

none of above

Finish