From the enthalpies of reaction
H2(g)+F2(g)→2HF(g)ΔH=−537kJ
C(s)+2F2(g)→CF4(g)ΔH=−680kJ
2C(s)+2H2(g)→C2H4(g)ΔH=+52.3kJ
calculate ΔH for the reaction of ethylene with...
From the enthalpies of reaction
H2(g)+F2(g)→2HF(g)ΔH=−537kJ
C(s)+2F2(g)→CF4(g)ΔH=−680kJ
2C(s)+2H2(g)→C2H4(g)ΔH=+52.3kJ
calculate ΔH for the reaction of ethylene with F2:
C2H4(g)+6F2(g)→2CF4(g)+4HF(g)
From the enthalpies of reaction H2(g)+F2(g)→2HF(g)ΔH=−537kJ
C(s)+2F2(g)→CF4(g)ΔH=−680kJ 2C(s)+2H2(g)→C2H4(g)ΔH=+52.3kJ
calculate ΔH for the reaction of ethylene with F2:
C2H4(g)+6F2(g)→2CF4(g)+4HF(g)
Consider the reaction H2 (g) + F2 (g) <-- --> 2HF (g) .At
a certain temperature, 0.50 moles of hydrogen gas, 0.50 moles of
fluorine gas and .25 moles of hydrogen fluoride gas are placed in a
5.0 L container. Determine if the gas is at equilibrium or not and
predict the direction it will move in order to get to equilibrium.
And, for the mixure of the gases, determine the final
concentrations of each gas. (use an appropriate table)....
At a particular temperature the equilibrium constant for the
reaction:
H2(g) + F2(g) ⇔ 2HF(g)
is K = 64.0. A reaction mixture in a 10.00-L flask contains 0.23
moles each of hydrogen and fluorine gases plus 0.50 moles of HF.
What will be the concentration of H2 when this mixture
reaches equilibrium?
At a particular temperature the equilibrium constant for the
reaction: H2(g) + F2(g) ⇔ 2HF(g) is K = 25.0. A reaction mixture in
a 10.00-L flask contains 0.33 moles each of hydrogen and fluorine
gases plus 0.30 moles of HF. What will be the concentration of H2
when this mixture reaches equilibrium?
At a particular temperature the equilibrium constant for the
reaction: H2(g) + F2(g) ⇔ 2HF(g) is K = 81.0. A reaction mixture in
a 10.00-L flask contains 0.25 moles each of hydrogen and fluorine
gases plus 0.37 moles of HF. What will be the concentration of H2
when this mixture reaches equilibrium?
Use standard enthalpies of formation to calculate
ΔH∘rxn for the following reaction:
C(s)+H2O(g)→CO(g)+H2(g)
Express your answer using four significant figures.
Use standard enthalpies of formation to calculate
ΔH∘rxn for the following reaction:
N2O4(g)+4H2(g)→N2(g)+4H2O(g)
Express your answer using four significant figures.
Arrange the following reaction in order of increasing S
value.
1. H2(g) + F2(g) 2HF(g)
2. NH4NO3(s) N2O(g) + 2H2O(I)
3. (NH4)2 Cr2O7(s) Cr2O3(s) + 4H2O(I) +N2(g)
Calculate ΔH° for the reaction C4H4(g) + 2H2(g) → C4H8(g), using
the following data:
ΔH°combustion for C4H4(g) = –2341 kJ/mol
ΔH°combustion for H2(g) = –286 kJ/mol
ΔH°combustion for C4H8(g) = –2755 kJ/mol
A) –128 kJ
B) 158 kJ
C) –158 kJ
D) 128 kJ
E) None of these choices are correct.
Suppose you have the following reaction at
equilibrium:
C(s)
+ 2H2(g) = CH4(g), ΔH = −74.8
kJ
What changes are expected to occur if the pressure of the system
was increased? You may select multiple answers.
The temperature would increase above the expected temperature
increase resulting from the increased pressure.
The concentration of H2(g) would
decrease
The amount of C(s) present would
decrease
The concentration of CH4(g) would increase
No change in the equilibrium would occur.
The concentration of CH4(g) would...