Chemistry - Salt Analysis Question with Solution | TestHub
A silvery coloured alloy made up of two metals [P] and [Q] . 10 gram sample of that alloy dissolve in dil. HNO3 to produce transparent clear solution-[S] .
Assume no redox change on passing H2S in step 2 and 100% yield of the all precipitation reaction.
(Given that dmg = dimethylglyoxime , atomic mass of Zn = 65 , Cu = 63.5 , Mn = 55 , Fe = 56 , Sn = 119 , Pb = 207 , Ni = 58.6 , Au = 197 , Ag = 108 , Cd = 112.5 , Hg = 200 , Pt = 195 , Al = 27 , Co = 59 , C = 12 , H = 1 , O = 16 , N = 14 , S = 32 , Cl = 35.5)
Write sum of number of unpaired electron(s), number of Metal-Carbon bond(s) and number of oxygen atom(s) in red precipitate obtained finally which contain metal [Q].
Answer:
Solution:
Red precipitate is Ni(DMG)₂. Unpaired electrons = 0, Ni-C bonds = 0, Oxygen atoms = 4. Sum = 4.