1) The value of G° at 100.0°C for the formation of calcium chloride from its con
ID: 883388 • Letter: 1
Question
1)
The value of G° at 100.0°C for the formation of calcium chloride from its constituent elements:
Ca(s) + Cl2(g) CaCl2(s)
is ________ kJ/mol. At 25.0°C for this reaction, H° is -795.8 kJ/mol, G° is -748.1 kJ/mol, and S° is -159.8 J/K.
The value of G° at 100.0°C for the formation of calcium chloride from its constituent elements:
Ca(s) + Cl2(g) CaCl2(s)
is ________ kJ/mol. At 25.0°C for this reaction, H° is -795.8 kJ/mol, G° is -748.1 kJ/mol, and S° is -159.8 J/K.
-779.8
2)
Determine G°rxn using the following information.
H2(g) + CO(g) CH2O(g) H°= +1.9 kJ; S°= -109.6 J/K
Determine G°rxn using the following information.
H2(g) + CO(g) CH2O(g) H°= +1.9 kJ; S°= -109.6 J/K
+34.6 kJ
3)
-683.3
4)
Under which of the following conditions would one mole of He have the highest entropy, S?
Under which of the following conditions would one mole of He have the highest entropy, S?
127°C and 15 L
5)
Determine the equilibrium constant for the following reaction at 549 K.
CH2O(g) + 2 H2(g) CH4(g) + H2O(g) H° = -94.9 kJ; S°= -224.2 J/K
Determine the equilibrium constant for the following reaction at 549 K.
CH2O(g) + 2 H2(g) CH4(g) + H2O(g) H° = -94.9 kJ; S°= -224.2 J/K
9.35 x 10-10
6) The free energy change of the reaction A(g)B(g) is zero under certain conditions. Thestandard free energy change of the reaction is -42.5 kJ.
Which statement must be true about the reaction?
Check all that apply.
Check all that apply.
The concentration of the product is greater than the concentration of the reactant.
7)
What element is being oxidized in the following redox reaction?
Ni 2+(aq) + NH4 +(aq) Ni(s) + NO3 -(aq)
What element is being oxidized in the following redox reaction?
Ni 2+(aq) + NH4 +(aq) Ni(s) + NO3 -(aq)
Ni
8)
What element is being reduced in the following redox reaction?
MnO4-(aq) + H2C2O4(aq) Mn2+(aq) + CO2(g)
What element is being reduced in the following redox reaction?
MnO4-(aq) + H2C2O4(aq) Mn2+(aq) + CO2(g)
-779.8
2)
Determine G°rxn using the following information.
H2(g) + CO(g) CH2O(g) H°= +1.9 kJ; S°= -109.6 J/K
Determine G°rxn using the following information.
H2(g) + CO(g) CH2O(g) H°= +1.9 kJ; S°= -109.6 J/K
+34.6 kJ
3)
The value of G° at 141.0°C for the formation of phosphorous trichloride from its constituent elements,
P2(g) + 3Cl2(g) 2PCl3(g)
is ________ kJ/mol. At 25.0°C for this reaction, H° is -720.5 kJ/mol, G° is and is
The value of G° at 141.0°C for the formation of phosphorous trichloride from its constituent elements,
P2(g) + 3Cl2(g) 2PCl3(g)
is ________ kJ/mol. At 25.0°C for this reaction, H° is -720.5 kJ/mol, G° is and is
-683.3
4)
Under which of the following conditions would one mole of He have the highest entropy, S?
Under which of the following conditions would one mole of He have the highest entropy, S?
17°C and 15 L 127°C and 25 L 17°C and 25 L127°C and 15 L
5)
Determine the equilibrium constant for the following reaction at 549 K.
CH2O(g) + 2 H2(g) CH4(g) + H2O(g) H° = -94.9 kJ; S°= -224.2 J/K
Determine the equilibrium constant for the following reaction at 549 K.
CH2O(g) + 2 H2(g) CH4(g) + H2O(g) H° = -94.9 kJ; S°= -224.2 J/K
9.35 x 10-10
6) The free energy change of the reaction A(g)B(g) is zero under certain conditions. Thestandard free energy change of the reaction is -42.5 kJ.
Which statement must be true about the reaction?
Check all that apply.
Check all that apply.
The reaction is at equilibrium. The concentration of the reactant is greater than the concentration of the product.The concentration of the product is greater than the concentration of the reactant.
7)
What element is being oxidized in the following redox reaction?
Ni 2+(aq) + NH4 +(aq) Ni(s) + NO3 -(aq)
What element is being oxidized in the following redox reaction?
Ni 2+(aq) + NH4 +(aq) Ni(s) + NO3 -(aq)
Ni
8)
What element is being reduced in the following redox reaction?
MnO4-(aq) + H2C2O4(aq) Mn2+(aq) + CO2(g)
What element is being reduced in the following redox reaction?
MnO4-(aq) + H2C2O4(aq) Mn2+(aq) + CO2(g)
Explanation / Answer
you posted so many questions in one question i will answer some of these
1)
we have to use G = H - T(S)
G (100 ºC) = H - T(S)
H is in Kj/mol we need to change in to joules
-795,800 J/mole - (100 + 273 K)(-159.8 J/K mole)
= 736194.6 j/mole
= 736.1946 kj/mol
so answer is D
please follow the remaining problems also same
7)
N is got oxidised
8)
Mn
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