Chem 103 Lab Final EXAM Questions with 100% Correct Answers | Verified | Updated (Actual Exam) LATEST VERSION!!

Chem 103 Lab Final EXAM Questions with 100% Correct Answers | Verified
| Updated (Actual Exam) LATEST VERSION!!




What were the physical properties used to identify alkanes and alkenes? - (ANSWER)Boiling points and
Density



What color is the potassium permanganate reagent in the Baeyer's test? - (ANSWER)Purple



What color is the bromine in the bromine test? - (ANSWER)Yellowish/ Orange



Which hydrocarbon will have positive result for the baeyer's and/or bromine test? - (ANSWER)Alkenes



What solvent was used to extract curcumin? - (ANSWER)Isopropyl alcohol



What is the percent of curcumin found in turmeric? - (ANSWER)3-5%



What can curcumin be used as in the lab? - (ANSWER)pH Indicator



What instruments were used in this lab? Also know the parts. - (ANSWER)Spec 20



What is the maximum wavelength of curcumin in the UV/Vis sprectrum? - (ANSWER)425



What test was used to classify aldehydes and ketones? - (ANSWER)Tollens



Will a ketone or aldehyde react with the Tollen's reagent? - (ANSWER)Aldehyde will react but Ketone
will not.



What does a positive Tollen's test look like? - (ANSWER)Silver