Page 24 - Practical-workbook-organic-3 isa

Sec 3: Synthesis of Osazone

Calculations: ⸪One mole of any substance = Molecular weight in grams
Amount of glucose Amount of phenylhydrazine Amount of glucosazone (g)
(g) (ml) (Theoretical Yield)
1 mole → 180 g 1 mole → 108.14 g 1 mole → 358.39 g

0.0027 mol → ? g 3x (0.0027) mol → ? g 0.0027 mol → ?

⸫ Glucose amount Amount = 0.87 g ⸫ Glucosazone amount (theoretical
yield) = 0.96 g
= 0.48 g ≅ . As phenylhydrazine is liquid,

⸪ Density of phenylhydrazine
◼ Glucose is the
limiting reactant = ρ = m (grams) %Yield =
used up first. ( ) ( ) ×

m (g) 0.87 ( )
= ⋯ %
⸫ ( ) = ρ (ml) = 1.1 ( )

⸫ . ( ) ×
= . ≅ . = ⋯ %

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