Login
Remember
Register
Science Q&A Sarvan.Net
All Activity
Q&A
Questions
Hot!
Unanswered
Tags
Categories
Users
Ask a Question
About Us
XML Sitemap
Terms of Service
Ask a Question
What is the enthalpy change (in kJ/mol) for the combustion of methane, CH4(g), given the following thermochemical equation:CH4(g) + 2 O2(g) -> CO2(g) + 2 H2O(l)ΔHrxn = -890.3 kJ/mol
0
votes
29
views
asked
Feb 20
in
ThermoChemistry
by
KelleS495456
(
1.9k
points)
What is the enthalpy change (in kJ/mol) for the combustion of methane, CH4(g), given the following thermochemical equation:CH4(g) + 2 O2(g) -> CO2(g) + 2 H2O(l)ΔHrxn = -890.3 kJ/mol
Your comment on this question:
Your name to display (optional):
Email me at this address if a comment is added after mine:
Email me if a comment is added after mine
Privacy: Your email address will only be used for sending these notifications.
Your answer
Your name to display (optional):
Email me at this address if my answer is selected or commented on:
Email me if my answer is selected or commented on
Privacy: Your email address will only be used for sending these notifications.
1
Answer
0
votes
answered
Feb 20
by
SVNCarissa5
(
1.8k
points)
The enthalpy change H for the combustion of methane, CH4 g , is given in the thermochemical equation:CH4 g + 2 O2 g -> CO2 g + 2 H2O l Hrxn = -890.3 kJ/molThis means that the enthalpy change for the combustion of methane is -890.3 kJ/mol.
Your comment on this answer:
Your name to display (optional):
Email me at this address if a comment is added after mine:
Email me if a comment is added after mine
Privacy: Your email address will only be used for sending these notifications.
Related questions
0
votes
1
answer
124
views
A chemistry student is given the following thermochemical equations: Equation 1: H2 (g) + 1/2O2 (g) → H2O(l) ΔH1 = -285.8 kJ/mol Equation 2: C(s) + O2 (g) → CO2 (g) ΔH2 = -393.5 kJ/mol Equation 3: 2H2 (g) + O2 (g) → 2H2O(l) ΔH3 = -571.6 kJ/mol Using Hess's Law, calculate the enthalpy change for the following reaction: C(s) + 2H2 (g) → CH4 (g)
asked
Jan 22
in
ThermoChemistry
by
IsraelSeidel
(
1.3k
points)
0
votes
1
answer
110
views
A chemistry student needs to calculate the standard enthalpy change for the combustion reaction of methane gas (CH4) at 298 K and 1 atm pressure. The equation for the reaction is:CH4(g) + 2O2(g) --> CO2(g) + 2H2O(l)Given the following standard enthalpies of formation at 298 K:ΔHf(CO2) = -393.5 kJ/molΔHf(H2O) = -285.8 kJ/molΔHf(CH4) = -74.8 kJ/molCalculate ΔHrxn, the standard enthalpy change for the combustion reaction of methane gas.
asked
Jan 22
in
Chemical thermodynamics
by
SelmaHartsoc
(
1.8k
points)
0
votes
1
answer
80
views
Calculate the enthalpy change (∆H) for the combustion reaction of methane gas (CH4) using Hess’s Law, when the enthalpy changes for the following reactions are given: Reaction 1: CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (l); ∆H = -891 kJ/mol Reaction 2: C (s) + O2 (g) → CO2 (g); ∆H = -393.5 kJ/mol Reaction 3: 2H2 (g) + O2 (g) → 2H2O (l); ∆H = -484 kJ/mol
asked
Jan 23
in
ThermoChemistry
by
SueCasteel38
(
1.4k
points)
0
votes
1
answer
72
views
Calculate the enthalpy change for the combustion of methane gas (CH4) at constant pressure, given that the standard enthalpy of formation for CH4 is -74.8 kJ/mol and the balanced chemical equation for the combustion reaction is:CH4 (g) + 2 O2 (g) → CO2 (g) + 2 H2O (l) The molar enthalpy of formation of CO2 is -393.5 kJ/mol and that of H2O is -285.8 kJ/mol.
asked
Jan 23
in
Chemical thermodynamics
by
RobertoMundy
(
1.7k
points)
0
votes
1
answer
127
views
A chemistry student needs to calculate the standard enthalpy change for the combustion reaction of methane (CH4) to produce carbon dioxide (CO2) and water (H2O) at 298 K. The student is given the following information: CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) ΔH°rxn = -890.4 kJ/molThe enthalpy of formation of CH4(g) and H2O(l) are -74.8 kJ/mol and -285.8 kJ/mol, respectively. Using this data, what is the standard enthalpy change for the combustion reaction of methane (CH4) to produce carbon dioxide (CO2) and water (H2O) at 298 K?
asked
Jan 22
in
Chemical thermodynamics
by
KeithAnthon1
(
1.9k
points)
37.4k
questions
37.2k
answers
2
comments
14.7k
users
Categories
All categories
Science
(12.0k)
Psychology
(10.5k)
Chemistry
(14.9k)
Organic Chemistry
(663)
Inorganic Chemistry
(568)
Physical Chemistry
(613)
Analytical Chemistry
(657)
BioChemistry
(719)
Polymer Chemistry
(720)
Medicinal Chemistry
(680)
Environmental Chemistry
(684)
ElectroChemistry
(379)
Computational Chemistry
(681)
Materials Chemistry
(641)
Surface Chemistry
(704)
Coordination Chemistry
(632)
Quantum Chemistry
(684)
ThermoChemistry
(573)
PhotoChemistry
(731)
Chemical kinetics
(639)
Chemical thermodynamics
(560)
Chemical equilibrium
(318)
Chemical bonding
(656)
Chemical reactions
(412)
Chemical synthesis
(532)
Chemical engineering
(614)
Chemical education
(836)
Welcome to Sarvan Science Q&A, where you can ask questions and receive answers from other members of the community.
...