The stoichiometric reaction of 516   g of dimethyldichlorosilane with water results in a tetrameric cyclic product X in 75 % yield. The weight (in g ) of X obtained is ____________ [Use, molar mass gmol - 1 : H = 1 , C = 12 , O = 16 , Si = 28 , Cl = 35 . 5 ]
A. A
The dimethyldichlorosilane is CH 3 2 SiCl 2 . The molecular mass is 129   u . Number of moles of dimethyldichlorosilane initially taken = 516 129 =   4 moles Applying POAC on Si atom Moles of tetrameric cyclic product formed = 4 4 × 75 100 = 0 . 75   moles Molar mass of product formed = 296   g / moles The mass of product formed = 296 × 0 . 75 = 222   g
Related: Chemistry — p Block Elements (Group 13 & 14) · All PYQ Banks