1.

Which of the given mixed solutions will not lead to precipitation at 25^(@) water (Given: K_(sp)(CaF_2)=3.9xx10^(-11),K_(sp)[Zn(OH)_2]=4.5xx10^(-17), K_(sp)[Ag_2CrO_4]=9.0xx10^(-12) and K_(sp)[PbSO_4]=1.8xx10^(-8))-

Answer»

solution of `10^(-3)(M)Ca(NO_3)_2` and `10^(-3)(M)` NAF are mixed in equal volumes
solution of `10^(-3)(M)ZnCl_2` and `10^(-2)(M)` NaF are mixed in equal volumes
solution of `10^(-4)(M)AgNO_3` and `10^(-4)(M)` NaF are mixed in equal volumes
solution of `2xx10^(-4)(M)PB(NO_3)_2` and `10^(-3)(M)" "Na_2SO_4` are mixed in equal volumes

Answer :C


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