You are trying to use percent mass of hydrogen to determine if a compound is epinephrine (C₉H₁₃NO₃) or nor-epinephrine (C₈H₁₁NO₃). What is the maximum error that is acceptable for your instrument in order to distinguish between these two compounds?

Question

Quizplus · Accepted Answer

The percent mass of hydrogen in epinephrine is approximately 6.98%, while in nor-epinephrine it is approximately 6.92%. The difference is 0.06%, so the maximum acceptable error must be less than this difference, making 0.5% the only viable option.

You Are Trying to Use Percent Mass of Hydrogen to Determine