Section: 1 | Conversion Factors for Chemical Kinetics |

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CONVERSION FACTORS FOR CHEMICAL KINETICS

TABLE 1. Equivalent Second Order Rate Constants

A↓ B→	cm³ mol^-1 s^-1	dm³ mol^-1 s^-1	m³ mol^-1 s^-1	cm³ molecule^-1 s^-1	(mmHg)^-1 s^-1	atm^-1 s^-1	ppm^-1 min^-1	m² kN^-1 s^-1
1 cm³ mol^-1 s^-1 =	1	10^-3	10^-6	1.66 × 10^-24	1.604 × 10^-5 T^-1	1.219 × 10^-2 T^-1	2.453 × 10^-9	1.203 × 10^-4 T^-1
1 dm³ mol^-1 s^-1 =	10³	1	10^-3	1.66 × 10^-21	1.604 × 10^-2 T^-1	12.19 T^-1	2.453 × 10^-6	1.203 × 10^-1 T^-1
1 m³ mol^-1 s^-1 =	10⁶	10³	1	1.66 × 10^-18	16.04 T^-1	1.219 × 10⁴ T^-1	2.453 × 10^-3	120.3 T^-1
1 cm³ molecule^-1 s^-1 =	6.023 × 10²³	6.023 × 10²⁰	6.023 × 10¹⁷	1	9.658 × 10¹⁸ T^-1	7.34 × 10²¹ T^-1	1.478 × 10¹⁵	7.244 × 10¹⁹ T^-1
1 (mmHg)^-1 s^-1 =	6.236 × 10⁴ T	62.36 T	6.236 × 10^-2 T	1.035 × 10^-19 T	1	760	4.56 × 10^-2	7.500
1 atm^-1 s^-1	82.06 T	8.206 × 10^-2 T	8.206 × 10^-5 T	1.362 × 10^-22 T	1.316 × 10^-3	1	6 × 10^-5	9.869 × 10^-3
1 ppm^-1 min^-1 = at 298 K, 1 atm total pressure	4.077 × 10⁸	4.077 × 10⁵	407.7	6.76 × 10^-16	21.93	1.667 × 10⁴	1	164.5
1 m² kN^-1 s^-1 =	8314 T	8.314 T	8.314 × 10^-3 T	1.38 × 10^-20 T	0.1333	101.325	6.079 × 10^-3	1

To convert a rate constant from one set of units A to a new set B find the conversion factor for the row A under column B and multiply the old value by it, e.g.. to convert cm³ molecule^-1 s^-1 to m³ mol^-1 s^-1 multiply by 6.023 × 10¹⁷.

Table adapted from High Temperature Reaction Rate Data No. 5, The University, Leeds (1970).

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TABLE 2. Equivalent Third Order Rate Constants

A↓ B→	cm⁶ mol^-2 s^-1	dm⁶ mol^-1 s^-1	m⁶ mol^-2 s^-1	cm⁶ molecule^-2 s^-1	(mmHg)^-2 s^-1	atm^-2 s^-1	ppm^-2 min^-1	m⁴ kN^-2 s^-1
1 cm⁶ mol^-2 s^-1 =	1	10^-6	10^-12	2.76 × 10^-48	2.57 × 10^-10 T^-2	1.48 ×10^-4 T^-2	1.003 × 10^-19	1.477 × 10^-8 T^-2
1 dm⁶ mol^-2 s^-1 =	10⁶	1	10^-6	2.76 × 10^-42	2.57 × 10^-4 T^-2	148T^-2	1.003 × 10^-13	1.477 × 10^-2 T^-2
1 m⁶ mol^-2 s^-1 =	10¹²	10⁶	1	2.76 × 10^-36	257T ^-2	1.48 ×10⁸ T^-2	1.003 × 10^-7	1.477 × 10⁴ T^-2
1 cm⁶ molecule^–2 s^–1 =	3.628 × 10⁴⁷	3.628 × 10⁴¹	3.628 × 10³⁵	1	9.328 × 10³⁷ T^-2	5.388 × 10⁴³ T^-2	3.64 × 10²⁸	5.248 × 10³⁹ T^-2
1 (mmHg)^-2 s^-1 =	3.89 × 10⁹ T²	3.89 × 10³ T²	3.89 × 10^-3 T²	1.07 × 10^-38 T²	1	5.776 × 10⁵	3.46 × 10^-5	56.25
1 atm^-2 s^-1 =	6.733 × 10³ T²	6.733 × 10^-3 T²	6.733 × 10^-9 T²	1.86 × 10^-44 T²	1.73 × 10^-6	1	6 × 10^-11	9.74 × 10^-5
1 ppm^-2 min^-1 = at 298K, 1 atm total pressure	9.97 × 10¹⁸	9.97 × 10¹²	9.97 × 10⁶	2.75 × 10^-29	2.89 × 10⁴	1.667 × 10¹⁰	1	1.623 × 10⁶
1 m⁴ kN^-2 s^-1 =	6.91 × 10⁷ T²	6.91T ²	69.1 × 10^-5 T²	1.904 × 10^-40 T²	0.0178	1.027 × 10⁴	6.16 × 10^-7	1

From J. Phys. Chem. Ref. Data, 9, 470, 1980, by permission of the authors and the copyright owner, the American Institute of Physics.

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CONVERSION FACTORS FOR CHEMICAL KINETICS

TABLE 1. Equivalent Second Order Rate Constants

TABLE 2. Equivalent Third Order Rate Constants

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