Make direct comparisons: If your values are lower than the typical values, brief

Question

Make direct comparisons: If your values are lower than the typical values, briefly gives possible reasons for such an occurrence. A) Experimental yield vs. typical yield b) Experimental specific rotation vs. typical specific rotation. Make direct comparisons: If your values are lower than the typical values, briefly gives possible reasons for such an occurrence. A) Experimental yield vs. typical yield b) Experimental specific rotation vs. typical specific rotation. Make direct comparisons: If your values are lower than the typical values, briefly gives possible reasons for such an occurrence. A) Experimental yield vs. typical yield b) Experimental specific rotation vs. typical specific rotation.

Explanation / Answer

A) Typical yield is only approximation of the amount one should obtain.There is always some loss of chemicals when the experiments are performed in the laboratory. This may occur when chemicals are transfered from one flask to other, during filtration, recrystallization process.

B) The specific rotation depends on the concentration of the solution. If the solution with accurate concentration is not made, the specific rotation will not match with the literature value.

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