Chemical Kinetics and Nuclear ChemistryHard
Question
For the reaction 2HI → H2 + I2, the expression $- \frac{1}{2}\frac{d\lbrack HI\rbrack}{dt}$ represents
Options
A.the rate of formation of HI.
B.the rate of disappearance of HI.
C.the instantaneous rate of the reaction.
D.the average rate of the reaction.
Solution
$r_{\text{inst}} = - \frac{1}{2}.\frac{d\lbrack HI\rbrack}{dt}$
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