Calculate the theoretical yield of hydrobenzoin based on 150 mg of benzil and 20 mg of sodium borohydride. The MW of benzil is 210.23 mg/mmol; NaBH4 = 37.83 mg/mmol; hydrobenzoin = 214.25 mg/mmol.
Added by Walter P.
Step 1
First, we need to determine the moles of each reactant: Moles of benzil = (150 mg) / (210.23 mg/mmol) = 0.713 mmol Moles of NaBH4 = (20 mg) / (37.83 mg/mmol) = 0.529 mmol Show more…
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Supreeta N.
Find the Theoretical Yield of hydrobenzoin and percent yield of hydrobenzoin benzoin: 1.0981 grams sodium borohydride: 0.2026 grams hydrobenzoin: 1.2005 grams
Calculate the theoretical weight (mass) of sodium borohydride in milligrams (mg) needed to reduce 50.00 mg of benzil to hydrobenzoin. Please keep 2 digits after the decimal point. Benzil -> (NaBH4) -> hydrobenzoin Physical constants: MW: 210.22 mp: 94-95 Hydrobenzoin (S,S or R,R): MW: 214.27 mp: 148.5-149.5 Hydrobenzoin (Meso): MW: Same mp: 137-139 Hydrobenzoin (Racemic): MW: Same mp: 122-123 Sodium borohydride: MW: 37.83 d: 400
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