Thank you for bringing this to our attention, we will fix that. So sorry about that! 

Gustav Hestholm Yay! We are so happy to hear the video helped and that you're learning a lot. If there is any video you need help finding feel free to let us know. 

The video below walks you through all of this and more, Melissa lists what you should look for when ranking acids and determining the strongest acid and base. I highly recommend watching this lesson first then watching the Study with Us video for extra practice and common exam questions. 

At timestamp 12:37 you'll see the intermediates are the ones that canceled out. This goes back to Chem 2 Kinetics where the intermediates are the ones that cancel out when finding the overall balanced reaction. Intermediates commonly formed in free radical halogenation are in the initiation step ( the 2 halogen radicals, 2 Cl• or 2 Br•), in the propagation step it's the alkyl radical formed (like methyl radical, CH₃•) and the regenerated halogen radical (Cl• or Br•). There are none in the termination step. 

In this video you'll also find intermediates shown at 29:35, this is specifically referring to energy diagrams and identifying the intermediate from the energy diagram. 

If you were looking for other nonradical reactions with examples of intermediates, we have a video that shows the intermediates for SN1 and E1 reactions it starts at timestamp 12:08 in the below video:

Lesson: Drawing Energy Diagrams for SN2, SN1, E2 and E1 Reactions

Does this answer your question?

Thank you for bringing this to our attention, yes that is correct it should be di and tetra substituted. So sorry about that, we will alert the team and get this fixed. 

Covering all the different types of Ochem 1 reactions will happen, it just typically takes the entire semester. The way you can cover Ochem 1 reactions is by watching each video for the specific type of reaction. 

You'll find Nucleophilic Substitution and Elimination Reactions (SN1, SN2, E1 and E2)  in the following section, each one is a different type of reaction used in Ochem 1.  https://chemmunity.com/categories/category-HNTCdf5Mrws  I recommend watching the first 5 videos in this category.

To understand organometallic reactions watch the first two videos in the Organometallic compounds category: https://chemmunity.com/categories/category-yIVgr3ARaxQ

Yes you can watch the Free Radical Halogenation video this goes into a type of reaction and talks in detail about reactivity, thermodynamics, kinetics and other key terms you'll need to understand. However if you haven't covered radicals yet or Free radical halogenation then I don't recommend watching this yet. 

Hi Riley Johnson, our Chemmunity AI alerted us that you would benefit from watching this video. At timestamp 33:00 you'll find your exact question explained. Also, if you haven't done so already I recommend watching the entire video to fully understand this concept. 

Yes that's correct, a benzylic radical is highly stable. You'll see this again typically in the second semester of Organic Chemistry. This type of reaction that focuses on benzylic radicals is known as free radical allylic bromination or NBS (timestamp 4:15 of the below video).

Chemmunity Team 

3. DMP (Dess-Martin Periodinane)

Reagents: Uses Dess-Martin periodinane, which is an iodine-based oxidizing agent.

Conditions: Very mild and efficient, often used at room temperature.

Products:

Primary alcohols → Aldehydes.

Secondary alcohols → Ketones.

Selectivity: Like the others, it’s selective and stops at the aldehyde stage for primary alcohols. It does not oxidize further to carboxylic acids.

Advantages: DMP is known for being user-friendly and producing fewer byproducts compared to chromium-based reagents like PCC.

1. Swern Oxidation

Reagents: Uses dimethyl sulfoxide (DMSO), oxalyl chloride, and a base like triethylamine.

Conditions: Mild and performed at low temperatures (around -78°C).

Products:

Primary alcohols → Aldehydes.

Secondary alcohols → Ketones.Selectivity: It’s selective and does not over-oxidize primary alcohols to carboxylic acids. It stops at the aldehyde stage.

2. PCC (Pyridinium Chlorochromate)

Reagents: PCC is a chromium-based oxidizing agent, often used with a solvent like dichloromethane (DCM).

Conditions: Mild and does not require extreme temperatures.

Products:

Primary alcohols → Aldehydes.

Secondary alcohols → Ketones.

Selectivity: PCC is also selective and stops at the aldehyde stage for primary alcohols. It does not oxidize further to carboxylic acids, unlike chromic acid