Answer to Question #232715 in Chemical Engineering for Victor

Question

1.The following reaction in liquid phase is conducted at 36 C, and the following data were obtained:
2A = 3R + S

Time (h)
0
0.5
1.5
3
4
7
13

Concentration of
A (mol/lt)

0.2
0.181
0.155
0.131
0.12
0.099
0.077



Determine:
A) The reaction order and the reaction rate coefficient
B) The time to react 90% conversion
C) If the activation energy is 10,800 kj/mol, calculate the half-life
time at 60 C.

Answer 1

$2A\to 3R+S$

Time (h) Concentration of A (mol/lt)

0 0.2

0.5 0.181

1.5 0.155

3.0 0.131

4.0 0.12

7.0 0.099

13.0 0.077

the reaction is a first order reaction as the concentration of A steadily decreases by a value of almost 2M.

r = d[A]/d(t) = 0.2/0.5 = 0.4M/s