Estimate Keq for the following equilibria at 350 K. R = 8.3145
J/(mol*K). Substance ΔHo(kJ/mol) So(J/(mol*K)) SnO2(s) -577.6 49.0
H2(g) 0 130.680 CO(g) -110.5 197.7 Sn(s, white) 0 51.2 H2O(l)
-285.83 69.95 Fe(s) 0 27.3 Fe3O4(s) -1118.4 146.4 Correct answer.
Correct. SnO2(s) + 2H2(g) ⇄ Sn(s, white) + 2H2O(l) The number of
significant digits is set to 2; the tolerance is +/-3% LINK TO TEXT
Incorrect answer. Incorrect. 3Fe(s) + 4H2O(l) ⇄ Fe3O4(s) + 4H2(g)
Entry field with incorrect answer...
Suppose Delta G^o is 25.0 KJ/mol for a hypothetical
reaction in which A converts into B. Which of the following
statements describes an equlibrium mixture of A and B?
a) B has a higher concentration than A.
b) Only A is present.
c) A and B have equal concentrations.
d) Only B is present.
e) A has a higher concentration than B.
Could you please explain your reasoning behind the
answer as well?
For the reaction below, Δ S ° = − 269 J/(mol · K) and Δ H ° = −
103.8 kJ/mol. Calculate the equilibrium constant at 25 °C.
3C(s) + 4H_2 (g) -->C_3+ H_8 (g)
For a particular reaction at 215.7 °C, ΔG = 404.91 kJ/mol, and
ΔS = 748.20 J/(mol·K).
Calculate delta G for -74.3 celcius.
I've asked this question previously and the individual who
answered got roughly 378 kj/mol which is incorrect.
The reaction
C4H8(g)⟶2C2H4(g)C4H8(g)⟶2C2H4(g)
has an activation energy of 262 kJ/mol.262 kJ/mol. At 600.0
K,600.0 K, the rate constant, ?,k, is 6.1×10−8 s−1.6.1×10−8 s−1.
What is the value of the rate constant at 765.0 K?
Consider a reaction with the following thermodynamic
properties.
ΔH° = 77.7 kJ
ΔS° = –35.7 J/(K •
mol)
ΔG°= 88.4 kJ
This reaction:
will proceed very slowly.
will be spontaneous at low temperatures.
has bonds in the products that are weaker than the
reactants.
may have fewer and more complicated molecules in the
product.