1.

Consider the reaction : AgCl (s) hArr Ag^(+) (aq) + Cl^(-) (aq) At 27^(@)C K_(C) = 1.6 xx 10^(-9) for this reaction. If final solution has a volume of 50 litre then what minimum millimoles of AgCl (s)is needed to achieve equilibrium.

Answer»


Solution :`{:(,AgCl (s),hArr,Ag^(+) (aq),+,Cl^(-) (aq),),("mole",-,,x,,x,),("at eqm.",,,,,,):}`
`K_(C) = 16 XX 10^(-10) = (x)/(50) xx (x)/(50`
`n_(Ag^(+)` at equilibrium `= x = 50 xx 4 xx 10^(-5)` moles `= 2 xx 10^(-3)` moles
minimum NUMBER `n_(AgCl)` required to achieve equilibrium `= 2 xx 10^(-3)` moles
achieve equilibrum = 2 millimoles


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