Answer to Question #66946 in Physical Chemistry for murahi

Question

Question 1 : The reactions with the high value of energy of activation are
Slow
Fast
Not feasible
Moderate

Question 2 : In general, the rate of a reaction can be increased by all the factors except
Using a catalyst
Increasing the activation energy
Increasing the concentration of reactants
Increasing the temperature

Question 3 : For the following system at equilibrium, what will cause the partial pressure of HF to increase?
U
O
2
(
s
)
+
4
H
F
(
g
)
→
U
F
4
(
g
)
+
2
H
2
O
(
g
)
UO2(s)+4HF(g)→UF4(g)+2H2O(g)

decreasing the pressure
adding
U
F
4
(
g
)
UF4(g)

adding
U
O
2
UO2
(s)
removing
H
2
O
(
g
)
H2O(g)

Answer 1

Question 1: The lower the activation energy of the reaction, the higher its speed and vice versa. So the correct answer: Slow.

Question 2: The correct answer: Increasing the activation energy.

Question 3: The correct answer: adding UF4(g).

Answer:
Question 1: Slow;
Question 2: Increasing the activation energy;
Question 3: adding UF4(g).