Question

Man SA sede of Aused Mass of Medex 1.08 ) Theory of aspirm 2.24.. 1.913 in this? SLE Lased on your ration, whate of reactions

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B. Aspirin Synthesis 1468 f. Mass of SA used (e) g. Volume of AA used (d) h. Mass of AA used (volume x 1.08 g/mL) 3 mL 3.948
1. Based on your observation, what type of reaction is aspirin synthesis? m. Mass of filter paper + foil + dry aspirin (first
PART II Melting Point Determination a. Observed Melting Temperature (Range) b. Theoretical melting point of aspirin (referenc
PARTI Calibration Curve of Salicylic Acid Standard Solutions A. Preparation of Stock Salicylic Acid Solutions a. Mass of Init
PART II and III Determination of Concentration and Purity of an Aspirin Sample, and Percent Yield a. Initial mass of aspirin I hope they are clear now.


Table 1 Standard Solution Volumes DI Water (ml) Standard Solution Number Standard Salicylic Acid Solution (mL) 1.0 0.75 0 0.5
0 0
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Answer #1

Answer:

Aspirin synthesis:

Q. (l) Type of reaction ----- esterification reaction (Answer)

  This is a substitution reaction in which alcohol (the –OH group in salicylic acid) reacts with acetic anhydride to form an ester, aspirin

Q (o) For question (o) you need to take an average of question (m) then subtract it by question (n).

So, the mass of dry aspirin is = {(2.251+2.2)/2} - 1.466 = 0.7595 (Answer)

Q. (p) Percent yield = (mass of dry aspirin / theoritical yield of aspirin ) *100%

So, Percent yield = ( 0.7595/1.91)*100% = 39.76 % (answer)

PART I

(A) question (c)

Density of Salicylic acid = 1.44 g/cm³ ,  weight taken = 0.2 g and moles = 0.0052

volume = (0.2/1.44)= 0.1389 ml

molarity (moles per liter )= (0.0052/0.1389) moles per ml = 0.03744 * 1000 = 37.44 moles per liter =37.44 M ( Answer).

PART I

Question (B)

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