Question

plz solve question 50.

Answer 1

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ElementPercentage compositionAtomic
weight Relative No. of atoms. Simplest ratio Carbon 14.4 12 14.4/12 = 1.2 1.2/1.2 =1 Hydrogen1.2 1 1.2/1 = 1.21.2/1.2 =1 Chlorine84.5 35.5 84.5/35.5 = 2.38. 2.38/1.2 = 2

Hence empirical formula is CHCl2. 
n = Molecular mass/Empirical formula mass 
= 168/(12 + 1 + 70) 
= 168/83 
= 2. 
Therefore, molecular formula = (CHCl2)2 = C2H2Cl4.
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