Answer to Question #67367 in Organic Chemistry for Miriam Zamudiomo

Question

how many moles of H2 are needed to completely hydrogenate 5 moles of a tryglyceride made of glycerol, and one unit of each lauric, oleic, and linoleic acids?

Answer 1

Lauric acid - C12H24O2 saturated acid
Oleic acid - C18H34O2 mono unsaturated acid (1 mole of oleic acid requires 1 mole of H2)
Linoleic acid - C18H32O2 di unsaturated acid (1 mole of oleic acid requires 2 mole of H2).
Thus, 1 mole of this triglyceride requires 2+1=3 mole of H2
n(H_2 )=(5 moles of tryglyceride ×3 moles H_2)/(1 moles of tryglyceride)=15 moles