Question
Question: For the decomposition of HI at 1000 K (2HI ® H<sub>2</sub> + I<sub>2</sub>), the following data were...
For the decomposition of HI at 1000 K (2HI ® H2 + I2), the following data were obtained [HI], MRate of decomposition
of HI (mol L–1s–1)
0.1 2.75 × 10–8
0.2 11 × 10–8
0.3 24.75 × 10–8
The order of reaction is :
A
1
B
2
C
0
D
1.5
Answer
2
Explanation
Solution
Rate = k[HI]n
11 × 10–8 = k[0.2]n ...(i)
2.75 × 10–8 = k[0.1]n ...(ii)
Dividing eq. (i) by eq. (ii),
4 = 2n, n = 2