A reactant decomposes with a half-life of 157 s when its initial concentration is 0.240 M. When the initial concentration is 0.782 M, this same reactant decomposes with the same half-life of 157 s.If the reaction order is 1 what is the k value ?
(t1/2)1 = 157s a1 = 0.240M
(t1/2)2 = 157s a2 = 0.782M
(t1/2)/(t1/2)2 = (a2/a1)^n-1
157/157 = (0.782/0.24)^n-1
1 = (3.2584)^n-1
(3.2584)^0 = (3.2584)^n-1
n -1 = 0
n = 1
first order reaction
K = 0.693/t1/2
= 0.693/157 = 0.004414s-1 >>>>answer
A reactant decomposes with a half-life of 157 s when its initial concentration is 0.240 M....
A reactant decomposes with a half-life of 48.3 s when its initial concentration is 0.118 M. When the initial concentration is 0.240 M, this same reactant decomposes with a half-life of 98.3 s. What is the order of the reaction? 01 O2 00 What is the value and unit of the rate constant for this reaction? Unit: M-s-1
A reactant decomposes with a half-life of 167 s when its initial concentration is 0.301 M. When the initial concentration is 0.661 M, this same reactant decomposes with the same half-life of 167 s. What is the value and unit of the rate constant for this reaction? What is the order of the reaction? K=? also k =0.00475 s-1 is not the answer
A particular reactant decomposes with a half-life of 139 s when its initial concentration is 0.356 M. The same reactant decomposes with a half-life of 233 s when its initial concentration is 0.212 M. Determine the reaction order. 0 2 1 What is the value and unit of the rate constant for this reaction? k=? units=?
A reactant decomposes with a half-life of 35.1 s when its initial concentration is 0.359 M. When the initial concentration is 0.733 M, this same reactant decomposes with a half‑life of 71.7 s. What is the order of the reaction? 1 2 0 What is the value and unit of the rate constant for this reaction? ?= Unit:
A reactant decomposes with a half-life of 11.5 s when its initial concentration is 0.150 M. When the initial concentration is 0.875 M, this same reactant decomposes with a half-life of 67.1 s. What is the order of this reaction? What is the value and unit of the rate constant for this reaction?
A particular reactant decomposes with a half-life of 131 s when its initial concentration is 0.285 M. The same reactant decomposes with a half-life of 221 s when its initial concentration is 0.169 M. Determine the reaction order. What is the value and units of the rate constant for this reaction? Units k =
A reactant decomposes with a half-life of 131 s when its initial concentration is 0.269 M. When the initial concentration is 0.755 M, this same reactant decomposes with the same half-life of 131 s. What is the order of the reaction? 0 wnat is the value and unit of the rate constant for this reaction? Number
A particular reactant decomposes with a half-life of 165 s when its initial concentration is 0.358 M. The same reactant decomposes with a half-life of 239 s when its initial concentration is 0.247 M. Determine the reaction order. 0 1 2 What is the value and unit of the rate constant for this reaction?
A particular reactant decomposes with a half-life of 153 s when its initial concentration is 0.397 M. The same reactant decomposes with a half-life of 233 s when its initial concentration is 0.261 M Determine the reaction order. O 1 What is the value and unit of the rate constant for this reaction? Number s additional feedback
A particular reactant decomposes with a half-life of 173 s when its initial concentration is 0.342 M. The same reactant decomposes with a half-life of 215 s when its initial concentration is 0.275 M. Determine the reaction order. 00 What is the value and units of the rate constant for this reaction?
> Where'd you get the 0.693? You did a little tangent with an n=1, i dont understand how that effected leading to your "0.693" out of NOWHERE
Loki Okami Sun, Nov 7, 2021 4:34 AM