Question 3 0.5 pts It is important to add the activated charcoal to the cool solution before heating. It should not be added to a boiling solution because... It can cause the solution to foam up and boil over. It can spit and result in burn hazards. It can result in low sample recovery. All of these answers. Question 4 0.5 pts
Added by Rhonda V.
Close
Step 1
This is a common safety and procedural consideration in chemistry labs, particularly during purification steps like decolorization. Show more…
Show all steps
Your feedback will help us improve your experience
Madhur L and 92 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
After adding activated charcoal, why does the solution need to be hot when filtering activated charcoal out of the solution? A. To evaporate some of the solvent. B. The high temps dissolve the activated charcoal. C. It doesn't actually need to be hot. D. It keeps crystals of your desired solid dissolved.
Madhur L.
Pre-Laboratory Assignment 1. Briefly explain why (a) you should not heat organic solvents over a Bunsen burner flame. (b) you should add activated carbon to a cool solution and then heat the mixture to boiling rather than add the carbon to a boiling solution. 2. Indicate a procedure to solve the following recrystallization problems. (a) oiling out (b) lack of crystal formation (c) presence of colored impurities (d) premature recrystallization in the funnel stem during gravity filtration.
Sri K.
Why do you have to filter the solution while it is HOT after adding pelletized Norit (decolorizing carbon)?
Adi S.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD