Question

Determine the value of the rate constant for the elementary reaction: I₂ (g)+H₂ (g)→2HI (aq)Given that when [I₂] is 0.15 M and [H₂] is 0.2M, the rate of reaction is 0.005 M s⁻¹ at 298 K. *
(a) 1.06 M⁻¹s⁻¹
(b) 2.16 M⁻¹s⁻¹
(c) 3.16 M⁻¹s⁻¹
(d) 0.166 M⁻¹s⁻¹

Answer 1

Answer:

A

Explanation:

options A is correct .

Answer 2

The rate constant for I₂ (g)+H₂ (g)→2HI is d) 0.166/Ms.

Given:

I₂= 0.15 M

H₂=0.2 M

Rate of reaction= 0.005 M/s

Temperature= 298K

To find:

The rate constant for the I₂ (g)+H₂ (g)→2HI

Solution:

The rate constant can be found out with the help of this formula,

Rate of reaction =k[A]¹[B]¹

Rate of reaction= k[I₂]¹[H₂]¹

(Here k is the rate constant)

0.005= k x 0.15 x0.2

k= $\frac{0.005}{0.15 * 0.2}$

k= 0.166 /Ms

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