Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

aromatic chem

orange unit

Properties of benzene C6H6, unsaturated structure, cyclic.
Why was Kekule's structure proposed? hydrogenation of benzene suggests three C=C bonds
What were the problems with Kekule's structure? unsaturated; benzene does not undergo electrophilic addition, equal electron density and C-C bond lengths, hydration value is lower than experimental value.
What is the shape of molecule for each carbon atom in the benzene ring trigonal planar 120
How is benzene's delocalised electrons formed? 3 of carbons electrons are bonded in sigma bonds, 4th is in a 2p orbital above and below the plane of C, p orbitals overlap with p orbitals on either side and producing pi bonds all over the ring, DELOCALISED ELECTRONS!
What is required for the formation of the NO2+ ion? concentrated H2SO4 concentrated HNO3 50degreesC
What can be used as a halogen carrier in the formation of halogen+ Fe FeBr3 AlBr3
How do we test for the presence of a carbonyl 2,4 DNPH+methanol+sulphuric acid=Bradys reagent add to solution forming yellow/orange ppt if carbonyl group is present
How do we determine if it is an aldehyde or a ketone tollens reagent=NaOH(aq)+AgNO3(aq) and aq NH3 Aldehyde=silver mirror, oxidised to carboxylic acid Ketone= no reaction
Identifying carbonyl compound yellow/orange ppt. 2,4 DNPH, filtered and recrystallised, purified sample produced. filtered and dried. melting point measured and compared to database.
Created by: 07blandforderin