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: C ( s ) + H 2 O ( g ) → CO ( g ) + H 2 ( g ) . (a) Assuming that coke has the same enthalpy of formation as graphite, calculate Δ H 298 ° 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: 2 H 2 ( g ) + CO ( g ) → CH 2 OH ( g ) . 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 ) .
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: C ( s ) + H 2 O ( g ) → CO ( g ) + H 2 ( g ) . (a) Assuming that coke has the same enthalpy of formation as graphite, calculate Δ H 298 ° 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: 2 H 2 ( g ) + CO ( g ) → CH 2 OH ( g ) . 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 ) .
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:
C
(
s
)
+
H
2
O
(
g
)
→
CO
(
g
)
+
H
2
(
g
)
.
(a) Assuming that coke has the same enthalpy of formation as graphite, calculate
Δ
H
298
°
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:
2
H
2
(
g
)
+
CO
(
g
)
→
CH
2
OH
(
g
)
.
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
)
.
Determine whether the following reaction is an example of a nucleophilic substitution reaction:
Br
OH
HO
2
--
Molecule A
Molecule B
+
Br
义
ollo
18
Is this a nucleophilic substitution reaction?
If this is a nucleophilic substitution reaction, answer the remaining questions in this table.
Which of the reactants is referred to as the nucleophile in this reaction?
Which of the reactants is referred to as the organic substrate in this reaction?
Use a ŏ + symbol to label the electrophilic carbon that is attacked during the substitution.
Highlight the leaving group on the appropriate reactant.
◇ Yes
O No
O Molecule A
Molecule B
Molecule A
Molecule B
टे
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Calorimetry Concept, Examples and Thermochemistry | How to Pass Chemistry; Author: Melissa Maribel;https://www.youtube.com/watch?v=nSh29lUGj00;License: Standard YouTube License, CC-BY