Why is theoretical yield almost never?

Answer 1

This is not true, experimental yield is can be higher than theoretical or equal theoretical yield. If the experimental yield is greater though, that means that something went wrong in the experiment and that was most likely a contaminant. Ideally, you want to be as close to the theoretical yield as possible.

Answer 2

Theoretical yield is the theoretical amount of product possible to be created from particular amounts of reagent in a chemical reaction. The reaction itself, as well as the different components and complexity of steps, determine what a normal actual yield achieved will be.

There are several reasons why theoretical yield is not generally (and I would speculate never) achieved. Firstly, it assumes ideal reaction conditions, such as standard temperature and pressure, which are not generally achieved or kept constant. Secondly, other reactions between chemicals might occur, or the reverse reaction might keep all the reagents from forming products. Lastly, the process by which the reagents are worked up to the final reaction, for instance measuring or purification, might result in a loss of reagent and thus change the amount of product you could actually get.

Answer 3

Sources of error are inevitable in a lab scenario no matter how careful you are. Contamination, limitations of measurement, and human error are the most often-encountered errors. A theoretical yield represents the perfect world of math (stoichiometry.)

Answer 4

because experimental deal with what u are seing while theory is something that we are ot seing

Answer 5

Between theory and practice there is always a difference.