At 100 degrees c, water reacts with acetic anhydride to make acetic acid. also, at 100 degrees c, water reacts with acetylsalicylic acid and reverts it to salicylic acid and acetic acid. based on this information, what affect does the presence of water have on the percent yield of aspirin?

The effect of water presence on percent yield of aspirin is that the water decreases the yield of aspirin through destroying both aspirin and acetic anhydride.
The synthesis of nucleophilic, the substitution of water and reaction effect on the stability of acetic anhydride. This is because acetic anhydride reacts rapidly with water and converts it to acetic acid.

The density would be 1.622