Sodium Borohydride + Vanillin a. Compare boiling points. What does this say about purity? Melting Point (Literature) 110C- 117C Melting Point Range (Start- Fully Melted) from Experiment (C) 113C - 117C b. Calculate how many moles of vanillian was used. Use proper sigfigs. (Steps) To a 10-mL Erlenmeyer flask equipped with a stir bar add vanillin (1.300 g) followed by EtOH (2.5 mL). If the vanillin does not dissolve, gently warm the flask with your hand. In another 10-mL Erlenmeyer flask add sodium borohydride solution [3.42 M in 1.0 M NaOH] (2.5 mL). c. Calculate theoretical yeild of vanillyl alcohol in grams. Use sigfigs. (0.431g / 1.387g) x 100 = Percent Yield (%) 31.07%

Sodium Borohydride + Vanillin a. Compare boiling points. What does this say about purity? Melting Point (Literature) 110C- 117C Melting Point Range (Start- Fully Melted) from Experiment (C) 113C - 117C b. Calculate how many moles of vanillian was used. Use proper sigfigs. (Steps) To a 10-mL Erlenmeyer flask equipped with a stir bar add vanillin (1.300 g) followed by EtOH (2.5 mL). If the vanillin does not dissolve, gently warm the flask with your hand. In another 10-mL Erlenmeyer flask add sodium borohydride solution [3.42 M in 1.0 M NaOH] (2.5 mL). c. Calculate theoretical yeild of vanillyl alcohol in grams. Use sigfigs. (0.431g / 1.387g) x 100 = Percent Yield (%) 31.07%

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter33: Automated Methods Of Analysis

Section: Chapter Questions

Problem 33.8QAP

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