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How many liters of H2 gas at STP are needed to completely saturate 240.g of glyceryl tripalmitoleate (tripalmitolein)?
Chemistry homework... I've come back to this question 6 times now. I can probably get to the answer on my own, I just need a bump in the right direction because I'm not really sure where to start.
1 Answer
- Simonizer1218Lv 71 year agoFavorite Answer
Glyceryl tripalmitoleate has THREE of the OH groups on glycerol esterified. So you need 3 moles of H per mole of glyceryl tripalmitoleate = 1.5 moles of H2/mole
The molar mass of Glyceryl tripalmitoleate is 801 g/mol
moles Glyceryl tripalmitoleate present = 240 g x 1 mol/801 g = 0.2996 moles
moles H2 needed = 0.2996 moles Glyceryl tripalmitoleate x 1.5 mole H2/mole = 0.449 moles H2 needed
At STP 1 mole = 22.4 liters
0.449 moles H2 x 22.4 L/mole = 10.1 Liters of H2 gas
