1) True or False A) Enthalpyisanintensiveproperty._____________ B) The enthalpy
ID: 895153 • Letter: 1
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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