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When only $\ce{HBr}$ is present, we do Markovnikov addition, that is $\ce{Br-}$ goes to the most substituted carbon. On the other hand, when $\ce{HBr}$ and peroxide is present, we do anti-Markovnikov addition, i.e. $\ce{Br-}$ goes to the less substituted carbon. So in your case: Because if we attack on 1, then rearrangement is observed while if we attack on ...


Ideally, pressure affects just the reaction rate, not the rate constant, like for $\ce{A + B -> C}$: $$\frac{\mathrm{d}C}{d\mathrm{t}} = k_1 \cdot p_\mathrm{A} \cdot p_\mathrm{B}$$ In case the are some non-linear effects and the reaction rate does follow the simple equation like above, with integer/half-integer exponents, there are possible several formal ...


Both the forward and the reverse rate are proportional to the surface area of A. Steelwool rust faster than a block of steel. Crystals grow faster with microcrystals instead of a single crystal in the mother liquor. Once you update your rate expressions to include the surface area of A in contact with the solution, it should all make more sense.


The surrounding pressure in the boiling point context is the pressure acting on the liquid, what includes also partial pressures of eventual vapors. There is always some air in a (fully) sealed cooker and the pressure is always higher than vapor partial pressure, so boiling point is always higher than water temperature. $$T_\mathrm{boil}=f(p_\mathrm{air}+p_\...


If you already know that $$V_0=V_\mathrm{max}\frac{[S]}{[S]+K_M}$$ you divide by $V_\mathrm{max}$ to get $$\frac{V_0}{V_\mathrm{max}} = \frac{[S]}{[S]+K_M}$$ Both sides of the equation tell you what fraction of active sites is occupied by substrate.


As far as I understand, the assumption that the RDS has a zero-order is false. The RDS has its order equal to its respective molecularity, however, in zero-order reactions, the rate-determining step will not have the initial reactants as parts of the elementary step. Thus, when you calculate the rate constant in terms of the initial reactants using the other ...

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