Question

A.) The reversible chemical reaction A+B⇌C+D has the following equilibrium constant: Kc=[C][D][A][B]=3.9 Initially, only A and B are present, each at 2.00 M. What is the final concentration of A once equilibrium is reached? Express your answer to two significant figures and include the appropriate units.

B.)What is the final concentration of D at equilibrium if the initial concentrations are [A] = 1.00 M and [B] = 2.00 M ? Express your answer to two significant figures and include the appropriate units.

Answer #1

ICE Table:

[A] [B] [C] [D]

initial 2.0 2.0 0 0

change -1x -1x +1x +1x

equilibrium 2.0-1x 2.0-1x +1x +1x

Equilibrium constant expression is

Kc = [C]*[D]/[A]*[B]

3.9 = (1*x)^2/(2-1*x)^2

sqrt(3.9) = (1*x)/(2-1*x)

1.9748417658131499 = (1*x)/(2-1*x)

3.95-1.975*x = 1*x

3.95-2.975*x = 0

x = 1.3277

At equilibrium:

[A] = 2.0-1x = 2.0-1*1.3277 = 0.6723 M

[B] = 2.0-1x = 2.0-1*1.3277 = 0.6723 M

[C] = +1x = +1*1.3277 = 1.3277 M

[D] = +1x = +1*1.3277 = 1.3277 M

A)

0.67 M

B)

1.3 M

The reversible chemical reaction
A+B⇌C+D
has the following equilibrium constant:
Kc=[C][D][A][B]=7.5
Part A Initially, only A and B are present, each at 2.00 M. What
is the final concentration of A once equilibrium is reached?
Express your answer to two significant figures and include the
appropriate units.
part b What is the final concentration of D at equilibrium if
the initial concentrations are [A] = 1.00 M and [B] = 2.00
M ?
Express your answer to two significant figures...

The reversible chemical reaction
A+B⇌C+D
has the following equilibrium constant:
Kc=[C][D][A][B]=7.5
Part A
Initially, only A and B are present, each at 2.00 M.
What is the final concentration of A once equilibrium is
reached?
Express your answer to two significant figures and include the
appropriate units.
Part B
What is the final concentration of D at equilibrium if the
initial concentrations are[A] = 1.00 M and [B] = 2.00
M ?
Express your answer to two significant figures and...

The reversible chemical reaction
A+B⇌C+D
has the following equilibrium constant:
Kc=[C][D][A][B]=3.3
Part A
Initially, only A and B are present, each at 2.00 M.
What is the final concentration of A once equilibrium is
reached?
Express your answer to two significant figures and include the
appropriate units.
[A] =
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Part
Part B
What is the final concentration of D at equilibrium if the
initial concentrations are [A] = 1.00 M and [B] = 2.00
M ?
Express...

The reversible chemical reaction
A+B⇌C+D
has the following equilibrium constant:
Kc=[C][D][A][B]=7.4
Part A
Initially, only A and B are present, each at 2.00 M. What is the
final concentration of A once equilibrium is reached?
Express the molar concentration numerically using two
significant figures.
Part B
What is the final concentration of D at equilibrium if the
initial concentrations are [A] = 1.00 MM and [B] = 2.00 MM ?
Express the molar concentration numerically using two
significant figures.

The reversible chemical reaction
A+B⇌C+D
has the following equilibrium constant:
Kc=[C][D][A][B]=6.7
A: initially, only A and B are present, each at 2.00 M.
What is the final concentration of A once equilibrium is
reached?
B:What is the final concentration of D at equilibrium if the
initial concentrations are [A] = 1.00 M and [B] = 2.00
M ?
Please include all steps!

The reversible chemical reaction
A+B⇌C+D
has the following equilibrium constant:
Kc=[C][D][A][B]=3.8
Part A
Initially, only A and B are present, each at 2.00 M.
What is the final concentration of A once equilibrium is
reached?
Part B
What is the final concentration of D at equilibrium if the
initial concentrations are [A] = 1.00 M and[B] = 2.00
M ?

The reversible chemical reaction
A+B⇌C+D
has the following equilibrium constant:
Kc=[C][D][A][B]=4.6
Part A
Initially, only A and B are present, each at 2.00 M.
What is the final concentration of A once equilibrium is
reached?
Part B
What is the final concentration of D at equilibrium if the
initial concentrations are [A] = 1.00 M and [B] = 2.00
M ?

The reversible chemical reaction
A+B⇌C+D
has the following equilibrium constant:
Kc=[C][D]/[A][B]=2.5
1. Initially, only A and B are present, each at 2.00 M.
What is the final concentration of A once equilibrium is
reached?
2.What is the final concentration of D at equilibrium if the
initial concentrations are [A] = 1.00 M and [B] = 2.00
M ?

The reversible chemical reaction A+B⇌C+D A + B ⇌ C + D has the
following equilibrium constant: Kc=[C][D][A][B]=6.7
Initially, only AA and BB are present, each at 2.00 MM. What is
the final concentration of AA once equilibrium is reached?
What is the final concentration of DD at equilibrium if the
initial concentrations are [A][A] = 1.00 MM and [B][B] = 2.00 MM
?

Part A
Initially, only A and B are present, each at 2.00 mol L−1. What
is the final concentration of A once equilibrium is reached?
Express your answer to two significant figures and include the
appropriate units.
The reversible chemical reaction
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Part B
What is the final concentration of Dat equilibrium if the
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L−1 ?
Express your answer to two significant figures and include the
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