Question

Data and Observations: (6 points) After Crystollazako 1. 3. Molecular Ratio and Propertine Before crystallization: 5.009 Material Mol. Wt. Wt. Used Moles color Lit. MP Lit. BP density nzoic 122 Acid 500g - 1022 white 122.3°C / 249.27 1.27 - Clearicolorleso 100 .00 Water 18 Clear/colorless 100 1.00 1) 3°C 2 ) 124°C Experimental melting point (provide a range) 1) Theoretical Recovery: Actual Recovery: Percent Recovery: Calculations: (4 points) Theoretical Recovery: Percent Recovery:

I am unclear on how to find the theoretical recovery and the actual recovery from this data. can you please walk me through this.

Before crystallization I used 5.00g

After crystallization I had 3.971g

Answer 1

Before crystallization 5.00g of benzoic acid is used After crystallization, 3.971g of benzoic acid is recovered So, theoritical recovery (yield)=5.00 g & actual recovery (yield) = 3.971 g Then, percent recovery (yield) = (actual recovery x 100) /theoritical recovery = (3.971 x 100)/5.00 = 79.42 % (ANSWER)