Zadania z chemii IB HL

When 1-bromopropane is warmed with aqueous sodium hydroxide, $\ce{NaOH(aq)}$, propan-1-ol is formed. (i) State the name given to this reaction's mechanism. (ii) Draw the structure of the transition state that occurs during this mechanism. (iii) Deduce the rate…

The rate of the reaction between propanone and iodine in acidic solution was measured at a fixed concentration of the acid catalyst. $\ce{CH3COCH3(aq) + I2(aq) -> CH3COCH2I(aq) + HI(aq)}$ $[\ce{CH3COCH3}]$ / $\mathrm{mol\,dm^{-3}}$ $[\ce{I2}]$ /…

The table shows how the initial rate of the reaction between X and Y depends on the concentrations of the reactants. Experiment $[\ce{X}]$ / $\mathrm{mol\,dm^{-3}}$ $[\ce{Y}]$ / $\mathrm{mol\,dm^{-3}}$ Initial rate / $\mathrm{mol\,dm^{-3}\,s^{-1}}$ 1 0.10 0.20…

The following results were obtained for the reaction between bromate(V) ions, bromide ions and hydrogen ions in aqueous solution. $\ce{BrO3^-(aq) + 5Br^-(aq) + 6H+(aq) -> 3Br2(aq) + 3H2O(l)}$ Experiment Initial [$\ce{BrO3^-}$] / $\mathrm{mol\,dm^{-3}}$ Initial…

The forward reaction is first order with respect to cyclohexane. $\ce{C6H12(g) <=> C6H6(g) + 3H2(g)}$ (i) Sketch a graph showing how the rate varies with the concentration of cyclohexane. (ii) Deduce the reaction's rate equation, and state the units of the…

The reaction $\ce{2P -> S + T}$ was studied by measuring the initial rate at different initial concentrations of P. Which graph shows that the reaction is first order with respect to P? A. Graph A B. Graph B C. Graph C D. Graph D