Question

in the synthesis aspirin, checking the purity is important. which of the techniques below will be used to detect impurities in aspirin? only include answers that are a stand-alone procedure used to detect impurities in aspirin. i. addition of fecl3(aq). ii. standardization of naoh(aq) iii. measure the melting point iv. back-titration v. measure the visible absorption spectrum

Answer 1

The purity of the compound could be observed by the use of;

• measure the melting point
• measure the visible absorption spectrum

How do you find impurities?

We know that a compound is said to be pure if the compound can have a sharp melting or boiling point. This is because, the presence of any impurity would cause the compound to melt or boil in a range of temperatures.

We must recall that aspirin is used as a drug. And because we use the compound as a drug, it is always important that the compound would be produced in the highest purity of the compound. We must have way to check the purity of the compound and this can be done by the use of certain methods.

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