rp10 questions to learn (1) Flashcards
Why is it important to take the weighing boat off of the mass balance when filling it?
to prevent any spilt reactant being accounted for by the mass balance.
Why is the weighing boat re weighed at the end?
Due to the static of the weighing boat causing residue of the reactant to be left over, we can find the difference between the mass of the weighing boat + reactant and weighing boat after reactant is added into conical flask to find the true accurate value for mass of reactant .
How is the mass of the salicylic acid calculated?
mass of the weighing boat + reactant - weighing boat after reactant is added into conical flask
When ethanoic anhydride is added to salicylic acid, what kind of reaction occurs and what is produced?
Acylation occurs and Aspirin is produced as well as a molecule of ethanoic acid
Why is concentrated sulphuric acid also needed?
it’s a strong acid catalyst needed for the acylation to occur.
