Identify limiting reagent Sodium Borohydride Report Name Main Reaction (line dra
ID: 1046861 • Letter: I
Question
Identify limiting reagent
Sodium Borohydride Report Name Main Reaction (line drawing) "? Lab Day, nuolat-130- 01 Data and Observations: Mw (g mol) Mass (g) Volume (mL) moles Diphenylketone 18 a11 Sodium borohydride 2-propanol Diphenylmethanol 84.24 2 25 (final mass) 6.oi5 as 0.008 2a 15m151 31.830.3i Melting point of product: (1 3 5-vs- Percent Yield: 80.8% Show calculations below for theoretical and percent yield. Identify your limiting reagent Theo. ycild: mo tuipeuuctm 3.203 airu u rnuo 2.609 Results Conclusion Seate ied wnd state nurit based on R and melting point (compare/contrast to literature), Note any major errors or chan on IR and melting pointExplanation / Answer
From the given reaction mechanism it is clear that all tha reactants react in the molar the ratio 1 to form the product that is also in the molar ratio 1.
This means 1 mole of diphenylketone react with 1 mole of sodium borohydride and 1 mole of 2 propanol to form 1 mole of diphenylmethanol. Now, since the moles of sodium borohydride is only 0.00822(least number of moles among all species), so only 0.00822 mol of diphenylmathanol will react with 0.00822 mol of sodium borohydride and 0.00822 mol of 2 propanol to form 0.00822 mol of diphenylmathanol.
Sodium borohydride is the limiting reagent
Theoretical yield is = moleof product× molar mass of prodct
**actual yield should be less than theoretical yield, so there must be some mistake done by you in measuring the mass of different components