Post Lab Quiz

Which of the following is most likely a soap?

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Which of the following is/are false for the saponification experiment?

• Solids were formed during the mixture of the soap solution

• Precipitates were found with KCl for waterhardness

• After filtration, the liquid is collected and stored for soap testing

• Ethanol was used to help evaporate the soap during heating

Based on this table which of the following is mismatched/wrong?

• Molisch

• Benedicts

• Barfoeds

• Bials

• Seliwanoffs

Which compound is the most likely observed based on these results?

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Find the Unknown Concentration

• 16.85 mg/ml

• 16.81 mg/ml

• 16.85M

• 16.81M

What test was used for honey experiment?

• Molisch

• Iodine

• Seliwanoff

• Bials

where does the complex form in the iodine test to form Blue-Black soln?

• Mannose

• Glucose

• Amylose

• Glycogen

Honey is a sweet, sticky substance made by bees from nectar. It contains approximately 69% glucose and fructose. In the UV-Vis spectroscopy method used to determine fructose concentration in honey, the UV range spans from 200 to 700 nm. Quartz cuvettes are appropriate for measurements in the visible range of the spectrum.

Which of the following statements made the prompt incorrect?

• Quartz cuvettes are used for measurements in the visible range.

• UV range spans from 200 to 700 nm.

• Honey contains approximately 69% glucose and fructose.

• None, the prompt is entirely true

EXP 4: SAPONIFICATION

Statement A: Saponification produces soap and glycerol when fats or oils are hydrolyzed by a base.
Statement B: Saponification also produces free fatty acids when a strong base is used.

• Statement B is true, Statement A is false
  

• Both Statements are true

• None of the statements is true

• Statement A is true, Statement B is false