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Calculate for the process
from the following information:
Calculate Δ H for the process
from the following information:
265 kJ
Calculate for the process
from the following information:
Calculate the standard molar enthalpy of formation of NO(
g ) from the following data:
90.3 mol −1 of NO
Using the data in Appendix G , calculate the standard enthalpy change for each of the following reactions:
(a)
(b)
(c)
(d)
Using the data in Appendix G , calculate the standard enthalpy change for each of the following reactions:
(a)
(b)
(c)
(d)
(a) −1615.0 kJ mol −1 ; (b) −484.3 kJ mol −1 ; (c) 164.2 kJ; (d) −232.1 kJ
The following reactions can be used to prepare samples of metals. Determine the enthalpy change under standard state conditions for each.
(a)
(b)
(c)
(d)
The decomposition of hydrogen peroxide, H
2 O
2 , has been used to provide thrust in the control jets of various space vehicles. Using the data in
Appendix G , determine how much heat is produced by the decomposition of exactly 1 mole of H
2 O
2 under standard conditions.
−54.04 kJ mol −1
Calculate the enthalpy of combustion of propane, C 3 H 8 ( g ), for the formation of H 2 O( g ) and CO 2 ( g ). The enthalpy of formation of propane is −104 kJ/mol.
Calculate the enthalpy of combustion of butane, C 4 H 10 ( g ) for the formation of H 2 O( g ) and CO 2 ( g ). The enthalpy of formation of butane is −126 kJ/mol.
−2660 kJ mol −1
Both propane and butane are used as gaseous fuels. Which compound produces more heat per gram when burned?
The white pigment TiO 2 is prepared by the reaction of titanium tetrachloride, TiCl 4 , with water vapor in the gas phase:
How much heat is evolved in the production of exactly 1 mole of TiO 2 ( s ) under standard state conditions?
67.1 kJ
Water gas, a mixture of H 2 and CO, is an important industrial fuel produced by the reaction of steam with red hot coke, essentially pure carbon:
(a) Assuming that coke has the same enthalpy of formation as graphite, calculate for this reaction.
(b) Methanol, a liquid fuel that could possibly replace gasoline, can be prepared from water gas and additional hydrogen at high temperature and pressure in the presence of a suitable catalyst:
Under the conditions of the reaction, methanol forms as a gas. Calculate for this reaction and for the condensation of gaseous methanol to liquid methanol.
(c) Calculate the heat of combustion of 1 mole of liquid methanol to H 2 O( g ) and CO 2 ( g ).
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