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1.9g of the chloroplatinate of a diacid ...

`1.9g` of the chloroplatinate of a diacid base when ignited left `0.75g` of Pt. Calculate the molecular mass of the base. (Atomic mass of Pt is 195)

Text Solution

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Mass of platinic chloride (W)=1.9 g 12
Mass of Pt obtained (x)=0.75
Acidity of base (n)=2
Molar mass of base `= (n)/(2) (( 19 5 xx W)/( x ) - 40) = (2)/(2) ((1 95 xx 1. 9)/( 0. 75 ) - 410) = 84 g mol ^(-1)`
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