Calculate the ratio of ` ([Ag^(+)])/( [Ag(NH_3)_2]^(+) ) ` in `0.2 M ` solution of `NH_3` .If the stability constant for the complex ` [Ag(NH_3) _2]^(+) is 1.7xx 10^(7) `

Explanation

` Ag^(+) 2NH_3rArr [Ag(NH_3) _2]^(+) `
` k= [[ Ag(NH_3)_2]^(+))/( [Ag^(+) ][NH^(3+]]^(2) ) `
` =( [Ag^(+)])/( [Ag(NH_3)_2]^(+) )=(1) /(k(NH_3) ^(2))`
` =(1) /( 1.7xx10 ^(7) xx( 0.2) ^(2) )= ( 10 ^(-7))/( 1.7xx10 ^(-2) ) `
` =( 10 ^(-5))/( 6.8) = 1.47xx 10^(-5)`