Which is the reason that ionic compounds are brittle? the bonds between the anions and cations are weak and therefore easily broken. a strong repulsive force is created when cations suddenly align. they involve positive metal ions in a sea of delocalized electrons. they share electrons, which makes the bond brittle.

If 10.g of agno3 is available, what volume of 0.25 m agno3 can be prepared

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)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.