Experiment 41 Advance Study Assignment: Preparation of Aspirin 1. Calculate the theoretical yield of aspirin to be obtained in this experiment, starting with 2.0 g of salicylic acid and 5.0 mL of acetic anhydride (density

The theoretical yield of aspirin is 2.61g

Explanation:

The balanced equation is

Salicylic acid + Acetic anhydride ---> Acetylsalicylic acid + Acetic acid  

Number of moles salicylic acid = (2.0g) / (138 g/mol) = 0.0145 mol  

Mass of acetic anhydride = (1.08g/ml ) * (5.0 mL)  = 5.4g

Number of moles of acetic anhydride = 5.4g / (102g/mol) = 0.0529 mol

 As we can see in the reaction equation

1 mol of acetic anhydride  produce 1 mol aspirin

OR

0.0145 mol salicylic acid produces 0.0145 mol aspirin.

Mass of aspirin produced = 0.0145 mol * (180.157g/mol)

The theoretical yield of aspirin is 2.61g

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.