12.
Predict the direction of the equilibrium shift when temperature is
decreased in the following reactions:
a.
C2H2 (g) + H2O (g) ?
CH3CHO (g) [?H = -151
kJ/mol]
b.
CH3CH2OH (l) + O2 (g) ?
CH3CH2O (g) + H2O
(g) [?H = exothermic]
c. 2
CH3CHO (g) ? 2 C2H4 (g) +
O2 (g) [?H =
endothermic]
13.
Consider the following endothermic reaction for the production of
hydrogen gas in a rigid container:
CH4(g) + H2O(g)
? CO(g) + 3 H2(g)
How...
Based on the color of the solutions, determine the direction of
the reaction equilibrium shift upon addition of each reagent
investigated and write the chemical reaction involving the reagent
that is responsible for the shift. Each of the following reagents
was added to FeSCN2+ (aq) and the color change is indicated. I'm
not sure of the product side of each reaction, please help.
a) Fe(NO3) + FeSCN2+ turned from red to dark red (This one might
not have an equation)...
Indicate which direction the reaction at equilibrium should
shift under the given conditions for the exothermic reaction of
H2(g) + CO2(g) ⇌ H2O(g) + CO(g).
Action --> effect
addition of CO2
addition of H2O
addition of H2
removal of H2
removal of CO2
removal of CO
PLEASE TRY TO EXPLAIN!!
If the reaction below is at equilibrium, which of the following
will shift the equilibrium to the right?
2 CO(g) + O2(g) <-> 2
CO2(g) ΔH is negative
A) increasing the amount of CO2 in the
vessel
B) increasing the temperature
C) increasing the volume of the container
D) adding a catalyst
E) none of these
Predict how the equilibrium will shift (to the left, to the
right or no change) with each of the following stresses: a. 2H2 (g)
+ 2NO (g) → N2 (g) + 2H2O (g) i. Increase [H2] ii. Decrease [NO]
iii. Decrease the pressure (by increasing the volume) b. CO (g) +
1/2O2 (g) → CO2 (g) + 283 kJ i. Decrease temperature ii. Increase
pressure (by adding He (g)) c. H2O (l) → H + (aq) + OH− (aq) i....
An evacuated reaction vessel is filled with 3.6 atm of NOCl.
When the system reaches equilibrium according to the reaction
below, there are 0.16 atm of NOCl. What is Kp for this
reaction?
2 NO (g) + Cl₂ (g) ⇌ 2 NOCl (g)
Consider the following reaction at equilibrium:
CO(g)+Cl2(g)⇌COCl2(g)
Part A
Predict whether the reaction will shift left, shift right, or
remain unchanged if COCl2 is added to the reaction mixture.
Predict whether the reaction will shift left, shift right, or
remain unchanged if is added to the reaction mixture.
-shifts left
-shifts right
-remains unchanged
Part B
Predict whether the reaction will shift left, shift right, or
remain unchanged if Cl2 is added to the reaction mixture.
Predict whether the reaction will...
1) For the following reaction at equilibrium in a reaction
vessel, which one of these changes would cause the Br2
concentration to decrease?
2NOBr(g) 2NO(g) + Br2(g), ∆Horxn= 30 kJ/mol
A) Increase the temperature.
B) Remove some NO.
C) Add more NOBr.
D) Compress the gas mixture into a smaller volume.
Consider the water-shift gas reaction:
H2O + CO --> H2 + CO2
A closed reaction vessel maintained at 3000 degrees Celcius is
filled with 0.475 M H2 and 0.490 M CO2. At equilibrium, their
respective concentrations are 0.410 and 0.425 M.
PART A:
The following ratio represents
[H2][CO2] / [H2O][CO]
CHOOSE ONE OR MORE:
the law of mass action, the mass action expression, the
equilibrium constant expression, the equilibrium constant. none of
these
PART B:
which way must the system...
Consider this reaction:
2O3(g)<--->3O2(g)
ΔHrxn=-285.4 kj/mol. In which direction will the
reaction shift when the following stresses are combined?
a.Remove ozone from the system
b.Add Ar
c.Decrease temperature
d.Add catalyst