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Experimental analysis of a compound cont...

Experimental analysis of a compound containing the elements x,y,z on analysis gave the following data. x = 32 %, y = 24 %, z = 44 %. The relative number of atoms of x, y and z are 2, 1 and 0.5, respectively. (Molecular mass of the compound is 400 g) Find out.
i) The atomic masses of the element x,y,z.
ii) Empirical formula of the compound and
iii) Molecular formula of the compound.

Text Solution

Verified by Experts


Calculated empirical formula mass
`= (64 xx 4) +(24 xx 2 ) +88`
`=64 +48 +88=200`
`n=("molar mass")/("calculated empirical formula mass")`
`:.n=(400)/(200)`
`=2`
`:.` Molecular formula `(X_(4)Y_(2)Z)_(2) = X_(8)Y_(4)Z_(2)`
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