New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

practice uplad

by: Study_Smarter_Now

practice uplad Chem 249

Santa Ana College

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

practice upload
Organic Chemistry I
Nguyen, W
Class Notes
25 ?




Popular in Organic Chemistry I

Popular in Chemistry

This 8 page Class Notes was uploaded by Study_Smarter_Now on Saturday March 5, 2016. The Class Notes belongs to Chem 249 at Santa Ana College taught by Nguyen, W in Fall 2016. Since its upload, it has received 32 views. For similar materials see Organic Chemistry I in Chemistry at Santa Ana College.

Similar to Chem 249 at Santa Ana College


Reviews for practice uplad


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 03/05/16
Bronsted-Lory Acid: A proton donor, a molecule which contains an acidic H Bronsted-Lory Base: A proton acceptor, a molecule which can form a bond to a proton ✦ Water can serve as an ACID or base: Example: The ammonia ( ) uses it's lone pair of e-s to form a new bond to the proton & is Ÿ acting as a proton acceptor & water as a proton donor. FLOW OF ELECTRON DENSITY : CRUVED-ARROW NOTATION: Ion reaction: A reaction in which ions participate as reactants, intermediates, or products. ✦ All reactions are accomplished via a flow of electron density (motion of electrons) "Curved arrows" illustrate the flow of e- density that causes a proton to be transferred from one reagent to another. Reaction mechanism: How the reaction occurs in terms of the motion of e-s • NOTE: The mechanism of a proton transfer involves e-s from a base deportonating an acid • In order to be acidic, H must be slightly + or electrophilic ¹ Possible if: • a halogen (F, Cl, Br, I) • Oxygen (O) • Nitrogen (N) ¹ Mineral acids & functional groups containing Hs which are potentially acidic: • Hs attached to C are not normally acidic ¹ Examples of possible Bronsted-Lowry bases: Neural molecules can also act as bases if they contain O or N atoms. ✦ Acid-Base Chemistry simple equation: Strong acid: If H-A is VERY willing to give up the proton Weak acid: If H-A is NOT willing to give up the proton ✦ Can figure out if H-A is willing to give up its proton by... Looking @ the conjugate base of H-A How stable is the negative charge? Stable ¹ H-A willing to give up proton Ÿ STRONG ACID Not Stable ¹ H-A NOT willing to give up proton Ÿ WEAK ACID Conjugate base: A species that results when an acid loses a proton (deportonating acid) Conjugate acid: A species that results when a base accepts a proton from an acid (protonated base) Example: What is the conjugate base of HCl? Cl- ✦ There is an inverse relationship between the acidity of an acid & the basic its of its conjugate base... • The more acidic the acid, the weaker the basic its of the conjugate base & vice versa. SKILL BUILDER - Drawing mechanism of a proton transfer Show the mechanism for the following acid-base reaction, Label the acid, base, conjugate base, and conjugate acid Step #1: ID acid & base Step #2: Draw curved arrows When water loses proton, hydroxide is generated Ÿ CONJUGATE BASE When methoxide receives proton, methanol is generated Ÿ CONJUGATE ACID 3.1 For each reaction draw the mechanism & then clearly label the acid, base, conjugate acid, and conjugate base: a) 3.2 Each of the following mechanisms contains one or more errors. Identify he errors & then describe what modification would be necessary in order to make the curved arrows correct. Explain. There is only 1 arrow & I is going in the wrong direction. The tail has been placed on the H atom (incorrect). Curved arrows show motion of e-s & not atoms. The ail of this curved arrows hold be on the lone pair of the nitrogen atom & head of the curved arrow should be on the proton. A second curved arrow was also missing. The first arrow is correct. The second curved arrow was not. The tail of the curved arrow should be on a bond & not he proton. & the oxygen atom. The second curve arrow was missing. 3.3 In an intermolecular proton transfer reaction, the acidic site & the basic site are tethered to the same molecule, & a proton is passed from the acidic region of the molecule to the basic region of the molecule. Draw a mechanism. 3.44 Write an equation for the proton transfer reaction that occurs when each of the following bases reach with water. Draw curved arrows that show the mechanism of the proton transfer: An acid is a material that: A) Accepts a proton B) Donates a proton C) Donates an electron D) Accepts a neutron A conjugate base results from: A) an acid losing a proton B) a base accepting a proton C) an acid gaining a proton D) a base accepting an electron pair What is the Brønsted-Lowry acid in: A) HCl dissolved in water: B) HCl (unionized) dissolved in benzene: C) Which solution is the more strongly acidic? Is weaker than HCl. Since HCl is the stronger acid, the HCl in benzene is the more acidic solution.


Buy Material

Are you sure you want to buy this material for

25 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Steve Martinelli UC Los Angeles

"There's no way I would have passed my Organic Chemistry class this semester without the notes and study guides I got from StudySoup."

Jennifer McGill UCSF Med School

"Selling my MCAT study guides and notes has been a great source of side revenue while I'm in school. Some months I'm making over $500! Plus, it makes me happy knowing that I'm helping future med students with their MCAT."

Jim McGreen Ohio University

"Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."


"Their 'Elite Notetakers' are making over $1,200/month in sales by creating high quality content that helps their classmates in a time of need."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.