1.

An organic base is tartraacidic. If from every 10 gm of the choloroplatinate salt of the base 3.9 gm of residue of platinum is obtained then what will be the molucular mass of the base [Pt=195]

Answer»

180
360
90
270

Solution :B ro `B_(2) (H_(2) Pt Cl_(6))_(4) to Pt`
`10/M XX 4=1xx3.9/195`
M=40 x 50 =2000
M= 40 x 50 =2000
2B+4x 410 =2000
B=180


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