1) True or False A) Enthalpyisanintensiveproperty._____________ B) The enthalpy

Question

1) True or False

A) Enthalpyisanintensiveproperty._____________

B) The enthalpy change for a reaction is equal in magnitude, but opposite in sign, to the

enthalpy change for the reverse reaction. ___________

C) Internalenergyisastatefunction._____________

D) Theenthalpychangeforareactionisindependentofthestateofthereactantsandproducts.

E) Bond enthalpy is a state function. ____________

F) H is the value of q measured under conditions of constant volume. ___________

G) TheenthalpychangeofareactionisthereciprocaloftheHofthereversereaction.

________

H) H°
reaction that forms one mole of the compound from elements with all substances in their standard state.

I) The enthalpy of a reaction is equal to the heat of the reaction. ________

J) When work is done on a system, w will be a negative value. __________

K) BombcalorimetermeasuresqwhichisH.___________

L) Standard state of a substance is its pure form at atmospheric pressure (1 atm) and the

temperature of 0 °C._________________

TheEofa system that releases 10.4 J of heat and does 8.7 J of work on the surroundings is ________ J.

The specific heat capacity of lead is 0.13 J/gK. How much heat (in J) is required to raise the temperature of 35 g of lead from 22 °C to 37 °C?

Given the data in the table below, H°rxn for the reaction Ca(OH)2 + 2H3AsO4 Ca(H2AsO4)2 + 2H2O

is ________ kJ.

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Explanation / Answer

1.

A) False

B) True

C) True

D) False

E) True

F) True

G) False

H) True

I) False

J) True

K) True

L) False

2) Delta E = q + w = 10.4 + 8.7 = 19.1 J

3) Q = ms*delta T = 35*0.13*15 = 68.25 J

4) data insufficient ( table not given in the question)

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