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Restriction of the term to refer to reaction rates leads to a more consistent view. Reactivity then refers to the rate at which a chemical substance tends to undergo a chemical reaction in time. In pure compounds, reactivity is regulated by the physical properties of the sample. For instance, grinding a sample to a higher specific surface area ...
Reactivity may refer to: Reactivity (chemistry) , the rate at which a chemical substance tends to undergo a chemical reaction Reactive programming , a property of an execution model whereby changes are automatically propagated through a dataflow network
The reactivity ratio for each propagating chain end is defined as the ratio of the rate constant for addition of a monomer of the species already at the chain end to the rate constant for addition of the other monomer.
Even with this proviso, the electrode potentials of lithium and sodium – and hence their positions in the electrochemical series – appear anomalous. The order of reactivity, as shown by the vigour of the reaction with water or the speed at which the metal surface tarnishes in air, appears to be Cs > K > Na > Li > alkaline earth metals,
The degree of composition drift is directly affected by the reactivity ratios of each monomer in the copolymer system. Both the Mayo-Lewis equation and plot of the equation make evident that as monomer conversion increases, the copolymer composition will drift as the preferences for monomers change due to the interaction between reactivity ...
Reactivity is a phenomenon that occurs when individuals alter their performance or behavior due to the awareness that they are being observed. [1] The change may be positive or negative, and depends on the situation. It is a significant threat to a research study's external validity and is typically controlled for using blind experiment designs.
In one study [2] the reactivity of two different free radical species (A, sulfur, B carbon) towards addition to simple alkenes such as acrylonitrile, vinyl acetate and acrylamide was examined. The sulfur radical was found to be more reactive (6*10 8 vs. 1*10 7 M −1 .s −1 ) and less selective (selectivity ratio 76 vs 1200) than the carbon ...
Body reactivity is usually understood as an organism's functional ability of its body to react adequately in response to influence the environment. It is not to be confused with resistance , which is its physiological stability against the influence of pathogenic factors.