At high temperatures, elemental Bromine, Br2, dissociates into individual bromine atoms. Suppose that in an experimental 2000°C, it is found that [Br2] = 0.97 M and [Br] = 0.034 M at equilibrium. Calculate the value of K.

Reaction rate depends on how many molecules are coming into contact with each other with enough energy to react. increasing the temperature of the reactants will increase -

)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.

Which of the following is in the lanthanide family? a) uranium b) promethium c) silver d) gold