For the reaction
A(aq) ---> B(aq)
the change in the standard free enthalpy is 2.59 kJ...
For the reaction
A(aq) ---> B(aq)
the change in the standard free enthalpy is 2.59 kJ at 25
oC and 4.73 kJ at 45 oC. Calculate the value
of this reaction's equilibrium constant at 75 oC.
a) For the reaction: A(aq) ---> B(aq) the change in the
standard free enthalpy is 2.83 kJ at 25 oC and 4.61 kJ
at 45 oC. Calculate the value of this reaction's
equilibrium constant at 75 oC.
b) A container encloses 31.1 g of CO2(g). The partial
pressure of CO2 is 2.66 atm and the volume of the
container is 25.9 L. What is the average, or root mean square,
speed (in m/s) of the CO2 molecules in this
container?
A reaction
A(aq) + B(aq) --> C(aq)
has a standard free-energy change of –3.23 kJ/mol at 25 °C. What
are the concentrations of A, B, and C at equilibrium if, at the
beginning of the reaction, their concentrations are 0.30 M, 0.40 M,
and 0 M, respectively?
A reaction: A (aq) + B (aq) <-----> C (aq) has a standard
free energy change of -3.05 kJ/mol at 25 C. What are the
concentrations of A, B, and C at equilibrium if, at the beginning
of the reaction, their concentrations are 0.30 M, 0.40 M, and 0 M,
respectively?
A = ? M
B= ? M
C= ? M
How would your answer above change if the reaction had a
standard free energy change of +3.05 kJ/mol?
A.)...
A scientist measures the standard enthalpy change for the following
reaction to be -613.2 kJ :
P4O10(s) + 6
H2O(l)-->4H3PO4(aq)
Based on this value and the standard enthalpies of formation for
the other substances, the standard enthalpy of formation of
H3PO4(aq) is kJ/mol.
A reaction
A + B <==> C
has a standard free-energy change of -3.27 kJ/mol at
25oC
What are the concentrations of A, B, and C at equilibrium if at the
beginning of the reaction their concentrations are 0.30M, 0.40M and
0M respectively?
a) The standard enthalpy change for the following reaction is
-270 kJ at 298 K.
2HCN (g) --> 2 C(s, graphite) + H2 (g) + N2 (g)
ΔH° = -270 kJ
What is the standard enthalpy change for this reaction at 298
K?
C (s, graphite) + 1/2 H2(g) + 1/2 N2(g) ---> HCN(g)
_______ kJ
A.) The standard enthalpy change for the following reaction is
359 kJ at 298 K.
PbCl2(s) ----> Pb(s) +
Cl2(g) ΔH° = 359
kJ
What is the standard enthalpy change for this reaction at 298
K?
Pb(s)
+ Cl2(g) ---->
PbCl2(s)
__________ kJ
B.) The standard enthalpy change for the following reaction is
-602 kJ at 298 K.
Mg(s)
+ 1/2 O2(g)
----> MgO(s) ΔH° =
-602 kJ
What is the standard enthalpy change for the reaction at 298
K?
2...
The standard enthalpy change for the following reaction is -170
kJ at 298 K. 2 Cu(s) + 1/2 O2(g) Cu2O(s) ΔH° = -170 kJ What is the
standard enthalpy change for the reaction at 298 K? 4 Cu(s) + O2(g)
2 Cu2O(s)
A student determines the heat of dissolution of solid cobalt(II)
chloride using a coffee-cup calorimeter of negligible heat
capacity. When 1.33 g of CoCl2(s) is dissolved in 111.00 g of
water, the temperature of the solution increases from...
at 25c the standard enthalpy of formation of HF(aq) is
-320.1 kj/mol. of OH(aq) it is -229.6Kj/mol. of F (aq) it is -329.2
Kj/mol.of H2O(l) it is -285.9Kj/mol.
a. calculate the standard enthalpy of neutralization
of HF.
HF (aq) + OH- (aq) -->F-(aq) +H2O (l)
b.using the value of -56.2kj as the standard enthalpy
change for the reaction
H+(aq)+ OH(aq)->H2O(l)
c. calculate the standard enthalpy of change for the
reaction
HF->H+F
Consider the reaction NH4Cl(aq)NH3(g) + HCl(aq) The standard
free energy change for this reaction is 62.8 kJ.
The free energy change when 1.72 moles of NH4Cl(aq) react at
standard condition is____ kJ.
What is the maximum amount of useful work that the reaction of
1.72 moles of NH4Cl(aq) is capable of producing in the surroundings
under standard conditions?_______
If no work can be done, enter none. kJ