Answer to Question #67821 in Physical Chemistry for rahina

Question

Question 10 : The reactions catalyzed by sunlight are called ____________ reactions
Exothermic
Sun-lighted
Endothermic
photochemical

Question 11 : The reaction below is exothermic:
2
S
O
2
(
g
)
+
O
2
(
g
)
→
2
S
O
3
(
g
)
2SO2(g)+O2(g)→2SO3(g)
. Le Chatelier's Principle predicts that __________ will result in an increase in the number of moles of
S
O
3
SO3
(g) in the reaction container.
decreasing the pressure
increasing the volume of the container
increasing the pressure
removing some oxygen

Question 12 : When extra
N
H
3
NH3
is added to the following system at equilibrium:
3
H
2
(
g
)
+
N
2
(
g
)
→
2
N
H
3
(
g
)
3H2(g)+N2(g)→2NH3(g)
, what happens?
Concentration of hydrogen decreases, but that of hydrogen increases
No change occurs
In order to restore equilibrium, the reaction shifts left, toward reactants
In order to restore equilibrium, the reaction shifts right, toward product

Answer 1

photochemical
increasing the pressure
In order to restore equilibrium, the reaction shifts left, toward reactants