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
Dear student,
please go thru this:
The strengths of weak acids are measured on the pKa scale. The smaller the number on this scale, the stronger the acid is.
Three of the compounds we shall be looking at, together with their pKa values are:
carboxylic acids are highly acidic that alcohols ...actually alchols are basic in nature but
phenol is acidic only due to resonace stablised phenoxide ion....
+I effect of CH3 is very weak , so its presence would not decrease acitidty of benzoic acid more ...
so it will be somewhat lesser acidic than benzoic acid but will be more acidic than remaining two...
now , structure 2 is more acidic than 1 because Cl has -I effect which makes p chloro phenol
more acidic than phenol ...
so acidic character will be 3>4>2>1
approve my ans if u like & also give ur responce to previously asked questions...
generally the acidic nature of organic compounds is as carboxylic acids> phenols> alcohols
now in given options carboxylic acids are more acidic and phelols are less acidic in nature.
between Carboxylate ion and phenoxide ion , the first one is more stable due to more resonance stabilisation.
phenoxide ion also exbits resonance structure but there is charge seperation occures so it is less stable than the one which does not posses charge seperation like carboxylate ion. so highest acidic nature is for benzoic acid or p-methyl benzoic acid.
if any +I efeective group attaches to the benzene ring it decreases the acidic nature of the compound so now most acidic nature compound is benzoic acid in given options.
halogen group is -I effective group which increases the acidic nature of compound so least acidic among the following is phenol
therefore the order of acidic nature is benzoic acid > p-methyl benzoic acid>p-chlorophenol>phenol
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 !