What is the standard enthalpy of formation of What is the standard enthalpy of formation of ...
What is the standard enthalpy of formation of What is the standard enthalpy of formation of
CH 3 CH 2 CH 2 CHO(l)? CH3CH2CH2CHO(l)? 2CH 3 CH 2 CH 2 CHO(l)+5O 2 (g)→8H 2 O(l)+8CO 2 (g); 2CH3CH2CH2CHO(l)+5O2(g)→8H2O(l)+8CO2(g);
ΔH°=–4943.6 kJ ΔH°=–4943.6 kJ
Substance ΔH° f (kJ/mol)
CO 2 (g) -393.5
H 2 O(l) –285.8
a.
–245.4 kJ/mol
b.
+245.4 kJ/mol
c.
–1792.5 kJ/mol
d.
–3151.1 kJ/mol
e.
+3151.1 kJ/mol
Homework Answers
delta(H) of reaction = delta(H f)product - delta(H f)reactant
delta(H f) of O2(g) = 0
-4943.6 = 8*(-393.5) + 8*(-285.8) - 5*0 - 2*x
-4943.6 = -3148 - 2286.4 -2*x
2*x = 4943.6 -3148 - 2286.4
2*x = 4943.6 - 5434.4
2*x = -490.8
x = -245.4 KJ/mol
standard enthalpy of formation of CH 3 CH 2 CH 2 CHO = -245.4 KJ/mol
Answer : option a
Add Answer to:
What is the standard enthalpy of formation of What is the
standard enthalpy of formation of ...
What is the standard enthalpy of formation of C H 3 C H 2 C H...
What is the standard enthalpy of formation of C H 3 C H 2 C H 2 CHO( l )? 2C H 3 C H 2 C H 2 CHO( l )+5 O 2 ( g )→8 H 2 O( l )+8C O 2 ( g ); ΔH°=–4943.6 kJ Substance ΔH ° f ( kJ/mol ) C O 2 ( g ) –393.5 H 2 O( l ) –285.8 Select one: a. –245.4 kJ/mol b. +245.4 kJ/mol c. –1792.5 kJ/mol...
19. What is the standard enthalpy of formation of liquid butyraldehyde, CH:CH2CH2CHOCO CHỊCH CHỊCHOI) + 30g)...
19. What is the standard enthalpy of formation of liquid butyraldehyde, CH:CH2CH2CHOCO CHỊCH CHỊCHOI) + 30g) – 4H2O) + 4CO(g); AH = -2471.8 kJ Substance AH/(kJ/mol) CO2(g) -393.5 H2O(1) -285.8 a. -245.4 kJ/mol b. +245.4 kJ/mol c. -1792.5 kJ/mol d.-3151.1 kJ/mol e. +3151.1 kJ/mol
19. What is the standard enthalpy of formation of liquid butyraldehyde, CH:CH2CH2CHOCO CHỊCH CHỊCHOI) + O2(g)...
19. What is the standard enthalpy of formation of liquid butyraldehyde, CH:CH2CH2CHOCO CHỊCH CHỊCHOI) + O2(g) – 4H2O) + 4CO(g); AH = -2471.8 kJ Substance AH/(kJ/mol) CO2(g) -393.5 H2O(1) -285.8 a. -245.4 kJ/mol b. +245.4 kJ/mol c. -1792.5 kJ/mol d. -3151.1 kJ/mol e. +3151.1 kJ/mol
Use the following data to calculate the standard enthalpy of formation of heptane, C7H16 (l). C7H16...
Use the following data to calculate the standard enthalpy of formation of heptane, C7H16 (l). C7H16 (l) + 11 O2 (g → 7 CO2 (g) + 8 H2O (l) ΔH° = -4817 kJ/mol ΔHf° of CO2 (g) = -393.5 kJ/mol ΔHf° of H2O (l) = -285.8 kJ/mol A)-218.2 kJ/mol B)-468.1 kJ/mol C)-223.9 kJ/mol D)-447.8 kJ/mol E)-111.5 kJ/mol
Calculate the standard enthalpy change for the fermentation process, in which glucose (C6H12O6) is converted into...
Calculate the standard enthalpy change for the fermentation process, in which glucose (C6H12O6) is converted into ethanol (C2H5OH) and carbon dioxide (CO2). Substance Enthalpy of Formation, Δ H o f CO2 (g) −393.5 kJ/mol CO2 (aq) −412.9 kJ/mol C2H5OH (l) −276.98 kJ/mol C6H12O6 (s) −1,274.5 kJ/mol H2O (g) −241.8 kJ/mol H2O (l) −285.8 kJ/mol O2 (g) 0 kJ/mol
The standard heat of formation, ΔH∘f, is defined as the enthalpy change for the formation of...
The standard heat of formation, ΔH∘f, is defined as the enthalpy change for the formation of one mole of substance from its constituent elements in their standard states. Thus, elements in their standard states have ΔH∘f=0. Heat of formation values can be used to calculate the enthalpy change of any reaction. Consider, for example, the reaction 2NO(g)+O2(g)⇌2NO2(g) with heat of formation values given by the following table: Substance ΔH∘f (kJ/mol) NO(g) 90.2 O2(g) 0 NO2(g) 33.2 Then the standard heat...
Calculate the standard enthalpy change for the fermentation process, in which glucose (C6H12O6) is converted into...
Calculate the standard enthalpy change for the fermentation process, in which glucose (C6H12O6) is converted into ethanol (C2H5OH) and carbon dioxide (CO2). Substance Enthalpy of Formation, CO2 (g) −393.5 kJ/mol CO2 (aq) −412.9 kJ/mol C2H5OH (l) −276.98 kJ/mol C6H12O6 (s) −1,274.5 kJ/mol H2O (g) −241.8 kJ/mol H2O (l) −285.8 kJ/mol O2 (g) 0 kJ/mol ______kJ/mol
1).From the standard enthalpies of formation, calculate ΔH°rxn for the reaction C6H12(l) + 9O2(g) → 6CO2(g)...
1).From the standard enthalpies of formation, calculate ΔH°rxn for the reaction C6H12(l) + 9O2(g) → 6CO2(g) + 6H2O(l) For C6H12(l), ΔH°f = –151.9 kJ/mol (5 points) Substance ∆H°f , kJ/mol C6H12(l) –151.9 O2(g) 0 H2O(l) –285.8 CO2(g) –393.5 2).Determine the amount of heat (in kJ) given off when 1.26 × 104 g of ammonia are produced according to the equation N2(g) + 3H2(g) → 2NH3(g) ΔH°= –92.6 kJ/mol Assume that the reaction takes place under standard conditions at 25oC.
The following table lists some enthalpy of formation values for selected substances. Substance ΔfH∘ΔfH∘ (kJ mol−1)(kJ...
The following table lists some enthalpy of formation values for selected substances. Substance ΔfH∘ΔfH∘ (kJ mol−1)(kJ mol−1) CO2(g)CO2(g) −393.5−393.5 Ca(OH)2(s)Ca(OH)2(s) −986.1−986.1 H2O(l)H2O(l) −285.8−285.8 CaCO3(s)CaCO3(s) −1207−1207 H2O(g)H2O(g) −241.8−241.8 Part A: Determine the enthalpy for this reaction: Ca(OH)2(s)+CO2(g)→CaCO3(s)+H2O(l) C a ( O H ) 2 ( s ) + C O 2 ( g ) → C a C O 3 ( s ) + H 2 O ( l ) Express your answer in kJ mol−1 k J m o l...
Calculate the standard combustion enthalpy of propylene at 25 ° C using the standard formation enthalpy...
Calculate the standard combustion enthalpy of propylene at 25 ° C using the standard formation enthalpy of liquid water (-286 kJ mol-1) and the following reactions: 1) CH2CHCH3 (g) + H2 (g) → CH3CH2CH3 (g); Δ? (1) = -125 kJ mol-1 2) CH3CH2CH3 (g) + 5O2 (g) → 3CO2 (g) + 4H2O (l); Δ? (2) = -2220 kJ mol-1 3) H 2 (g) + 0.5O2 (g) → H2O (l);Δ? ((3) = -286 kJ mol-1
19. What is the standard enthalpy of formation of liquid butyraldehyde, CH:CH2CH2CHOCO CHỊCH CHỊCHOI) + 30g) – 4H2O) + 4CO(g); AH = -2471.8 kJ Substance AH/(kJ/mol) CO2(g) -393.5 H2O(1) -285.8 a. -245.4 kJ/mol b. +245.4 kJ/mol c. -1792.5 kJ/mol d.-3151.1 kJ/mol e. +3151.1 kJ/mol
19. What is the standard enthalpy of formation of liquid butyraldehyde, CH:CH2CH2CHOCO CHỊCH CHỊCHOI) + O2(g) – 4H2O) + 4CO(g); AH = -2471.8 kJ Substance AH/(kJ/mol) CO2(g) -393.5 H2O(1) -285.8 a. -245.4 kJ/mol b. +245.4 kJ/mol c. -1792.5 kJ/mol d. -3151.1 kJ/mol e. +3151.1 kJ/mol
Most questions answered within 3 hours.
-
An electric ceiling fan is rotating about a fixed axis with an
initial angular velocity magnitude...
asked 1 hour ago -
Consider a reversible adiabatic process. Where, p1=10x10^5 PA
and T-289K. It is a closed system in...
asked 1 hour ago -
which are core assumptions of the simple linear regression model or
arise from core assumptions? a-error(epsilon)...
asked 2 hours ago -
The Holtz Corporation acquired 80 percent of the 100,000
outstanding voting shares of Devine, Inc., for...
asked 2 hours ago -
In class we discussed the valuable role of data in business as
well as the importance...
asked 4 hours ago -
you plan on savings $500 per month for 30 years and invest each
of those payments...
asked 6 hours ago -
1. Kenny Inc. has the following income statement for the most
recent fiscal year:
Sales $558.400...
asked 5 hours ago -
A meter stick is found to balance at the 45.8 cm mark when
placed on a...
asked 5 hours ago -
1. A manufacturer of processing chips knows that 2% of its chips
are defective in some...
asked 8 hours ago -
Discuss what you think the exit polls tell us about voters.
asked 9 hours ago -
The electron in a hydrogen atom can undergo a transition from
n=1 to n=6, absorbing a...
asked 9 hours ago -
Based on what you learned in chapter 11, why would an
individual with a high BMI...
asked 9 hours ago