Question

An unknown liquid sample is tested for chemical composition. You receive the following results: iodine test = yellow; biuret test = purple; Benedict's test = red; and paper lipid test = clear. Which of the following are present in this sample? (Select all that apply) A. starch B. protein C. sugar D. lipids E. None of these are present.

Name: an unknown liquid sample is tested for chemical composition you receive the following results iodine test yellow biuret test purple benedicts test red and paper lipid test clear which of the 60591
Uploaded: 2022-08-30T03:46:07-08:00
Duration: 31 s
Channel: Liliane Martins
Description: an unknown liquid sample is tested for chemical composition you receive the following results iodine test yellow biuret test purple benedicts test red and paper lipid test clear which of the 60591

          An unknown liquid sample is tested for chemical composition. You receive the following results: iodine test = yellow; biuret test = purple; Benedict's test = red; and paper lipid test = clear. Which of the following are present in this sample? (Select all that apply)
A. starch
B. protein
C. sugar
D. lipids
E. None of these are present.

Added by Linda T.

Organic Chemistry

Janice Gorzynski Smith 4th Edition

Instant Answer

Solved by Expert Liliane Martins

08/30/2022

Step 1

The iodine test is used to detect the presence of starch. A positive result would turn blue-black, while a negative result remains yellow or brown. The given result is yellow. Show more…

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An unknown liquid sample is tested for chemical composition. You receive the following results: iodine test = yellow; biuret test = purple; Benedict's test = red; and paper lipid test = clear. Which of the following are present in this sample? (Select all that apply) A. starch B. protein C. sugar D. lipids E. None of these are present.