Explain `K_(b)` order : `Et_(2)NH gt Et_(3)N gt EtNH_(2)` in aqueous solution.

Electrolysis is an important technique for extraction of metals, and each ion of the solution needs a minimum voltage to get discharged and this value is expressed in terms of discharge potential. For some metal ions the discharge potentials follow the order given below : Li^(+) gt K^(+) gt Ca^(2+) gt Na^(+) gt Mg^(2+) gt Al^(3+) gt Zn^(2+) gt Fe^(2+) gt Ni^(2+) gt H_(3)O^(+) gt Cu^(2+) gt Hg_(2)^(2+) gt Ag^(+) gt Au^(3+) For some anions the discharge potentials are in the order : SO_(4)^(2-) gt NO_(3)^(-) gt OH^(-) gt Br^(-) gt I^(-) When aqueous solution of cupric bromide is electrolyzed the product obtained at cathode will be :

Arrange the following inincreasing order of their basic stregth in aqueous solution: CH_3.NH_2,(CH_3)_3N,(CH_3)_2NH

Which of the following orders is correct? (1) SbH_(3)gt NH_(3) gt AsH_(3) gt PH_(3)-" Boiling Point" (2) NH_(3) gt PH_(3) gt AsH_(3) gt SbH_(3)-" Thermal Stability" (3) NH_(3) gt PH_(3) gt AsH_(3) gt SbH_(3) - "Basic Character" (4) NH_(3) gt PH_(3) gt AsH_(3) gt SbH_(3)- "Bond Angle"

Arrange the following in the increasing order of their basic strength in aqueous solutions: CH_(3)NH_(2), (CH_(3))_(3)N, (CH_(3))_(2)NH