nEED HELP PLEASEEE CAN YOU HELP ME ANSWER HOW TO CALCULATE THE 1. EQUIVALENTS TA

Question

nEED HELP PLEASEEE

CAN YOU HELP ME ANSWER HOW TO CALCULATE THE

1. EQUIVALENTS TABLE( HOW TO CALCULATE)

2. THERIORETICL PRODUCT TABLE NEED HELP TO FILL IT UP. ( sHOW cALCULATION)

O synthesis of Aspi x & Organic Chemist X G theoretical prod x X Experiment 5-sy... X D Grams to Moles X Convert milliliter... 11% e a Search https //undergrad-ed chemistry ohio-state. OH3+ Complete the stoichiometry table using the starting values provided molecular mass (B) mmoles density vol. weight equivalents (ml) g/mL) reagent 138.12 0.319 433 000 salicyclic acid 102.9 0.254 405000 1.08 0.254 acetic anhydride phosphoric acid 98 0.1040 942000 1.885 0.1040 (85% soln wt/wt) theoretical product 180.15 asp 1.05 L acetic acid melting point of aspirin 135 Select the name of the catalyst used for this reaction, if there was atalyst used, select none Ask me anything 10 PM 3/7/2017

Explanation / Answer

from the reaction

Salicylic acid + Acetic Anhydride =Acetyl Salicylic acid (Aspirin) + Acetic acid

ratio is 1:1 for all

so

from your table

mol of Salicylic acid = mass/MW = 0.319/138.12 = 0.00230 mol --> 0.00230*1000 = 2.3 mmol

mol of Acetic anhydride = mass/MW = 0.254/102.9= 0.002468 mol --> 0.002468 *1000 = 2.46 mmol

the phosphoric acid is a catalys, will not react

so...

Salicylic acid is limiting the reaction, since 2.3 mol will react with 2.3 mol of acetic anhydride to form 2.3 mmol of aspiring

so..

theoretical product = 2.3 mmol of aspirin, 2.3 mmol of acetic acid

MW of Aspirin = 180 g/mol

mass = mol*MW = (2.3/1000)(180) = 0.414 g of aspirin = 414 mg of Aspirin, i.e. theoretical yield

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