100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Chem 219b Lab Final questions and answers $13.49   Add to cart

Exam (elaborations)

Chem 219b Lab Final questions and answers

 0 view  0 purchase
  • Course
  • Chem&219
  • Institution
  • Chem&219

• Typical NMR chemical shift for methyl protons adjacent to a ketone 2.1-2.6 ppm • Level of solvent on a TLC plate Below the spots when first placed in the developing jar, and then it will eventually rise to the top past the spots Previous Play Next Rewind 10 seconds Move ...

[Show more]

Preview 2 out of 5  pages

  • September 13, 2024
  • 5
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Chem&219
  • Chem&219
avatar-seller
BRAINBOOSTERS
Chem 219b Lab Final questions
and answers

Valence
the number of bonds an atom will form to fill its outer shell
Ionic bonds
complete transfer of one ore more valence electrons from one atom
to another
Previous
Play
Next
Rewind 10 seconds
Move forward 10 seconds
Unmute
0:00
/
0:15
Full screen
Brainpower
Read More
Cation
negatively charged electron loses electron and becomes positive
Anion
atom receiving electrons becomes negatively charged
Ion
posses a non-zero electrical charge
Covalent bonds

, formed by the sharing of electrons between elements with little or
no difference
Diatomic elements
Bond strength
Bond length
• Typical NMR chemical shift for methyl protons adjacent to a ketone
- answer 2.1-2.6 ppm


• Level of solvent on a TLC plate - answer Below the spots when first
placed in the developing jar, and then it will eventually rise to the
top past the spots


Column Chromatography - answer Provides a method for the
separation and isolation of individual components of a mixture


• Stationary phase in column chromatography - answer Silica
gel/adsorbent


• Mobile phase in column chromatography - answer Eluent/ the
solvent


• Polarity in column chromatography - answer All compounds move
down a column in polar solvent but in a non-polar solvent, only a
non-polar solute will move with the solvent


• Glass wool in column chromatography - answer Mobile phase
would not be able to travel all the way through and out of the
column


Petroleum Ether - answer Non-polar compound that would not
separate polar components in column chromatography

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller BRAINBOOSTERS. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $13.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

78140 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$13.49
  • (0)
  Add to cart