For the reaction:
The concentration-time graph is as follows:
What is the value of the equilibrium constant?
1, 2, 4
The equilibrium constant expression
corresponds to which of the following balanced chemical reactions?
For the reaction
The relationship between Kc and Kp is
For the reaction
Suppose we make a mixture with the following concentrations:
[NH3] = 1.0M, [N2] = 1.0M, [H2] = 1.0M
In which direction will the reaction go?
In the equilibrium
The initial conditions are:
[NOCl]o = 1.0 M
[NO] = 0.0 M
[Cl2] = 0.0 M
Which is the correct expression for the equilbrium concentrations?
A. [NOCl] = 1.0-x, [NO] = x, [Cl2] = x
B. [NOCl] = 1.0-2x, [NO] = 2x, [Cl2] = x
Which of the following equilibria will move left (products ---> reactants)
when the volume of the reaction vessel is increased?
A, B, C
The equilibrium constant for the reaction
is 4.3 at 250oC and 1.8 at 275oC.
The reaction is
If the density of graphite is about 2 g/mL and that of buckyball is about
1.5 g/mL, in which direction would the application of high pressure drive
toward formation of graphite, toward formation of buckyball,
neither would be formed preferentially
209. The equilibrium constant
for autoionization of silicon at 298 K is about 1020 cm-6.
If the silicon is doped with phosphorus to give an electron concentration,
n, of 1020 cm-3, the concentration of valence band
holes, p, is:
211. The element Bi melts
at 271 degrees C and has a density of 9.73 g/ml as a solid and 10.05 g/ml
as a liquid at this temperature. For the equilibrium, Bi(s) <==> Bi(l),
melting is favored in this endothermic reaction by either
increasing, decreasing temperature
increasing, decreasing pressure
217. Consider the gaseous
equilibrium of H2 (g) + I2 (g) <==> 2 HI (g).
As sketched below, the pressures, P, of these three gases are at equilibrium
in a container. At some time, t, extra I2 is added, as shown.
Which of the sets of curves shows how the system will respond to this situation?
A, B, C, D
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