Hey there! We receieved your request
Stay Tuned as we are going to contact you within 1 Hour
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-5470-145
+91 7353221155
Use Coupon: CART20 and get 20% off on all online Study Material
Complete Your Registration (Step 2 of 2 )
Sit and relax as our customer representative will contact you within 1 business day
OTP to be sent to Change
The ammonium cation (protonated form) of aliphatic amine is solvation-stabilised by H2O molecules via Hydrogen-bonding in aqueous solution.
Ammonium cation of primary amine (RNH3+) is maximum solvated of all types (primary, secondary & tertiary) due to greater number of hydrogens directly attached to nitrogen and hence their hydrogen bonding with oxygen of water(solvent) molecules.
In total, three effects are most useful to decide basic character of simple aliphatic amines in aqueous solution. (a) Inductive effect – which favors tertiary amine to be more basic due to greater + I effect of three alkyl groups directly attached to nitrogen (b) Solvation effect- which favor primary amine to be more basic due to greater solvation of its cation. (c) Steric factor – which causes tertiary amine to be less basic due to steric hindrance to approach of proton towards nitrogen.
As a combined result of above three factors, in aq solution, the order of basic character (pKb values in brackets) in isomeric aliphatic amines are different in different cases-
Get your questions answered by the expert for free
You will get reply from our expert in sometime.
We will notify you when Our expert answers your question. To View your Question
Win Gift vouchers upto Rs 500/-
Register Yourself for a FREE Demo Class by Top IITians & Medical Experts Today !