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
A polystyrene, having formula Br3C6H3(C8H8)n was prepared by heating styrene with tribromobenzoyl peroxide in the abscense of air. If it was found to contain 10.46% bromine by weight. Find the value of n.
plz give complete solution.....
Let the weight of polystyrene prepared be 100 g
number of moles of Br in 100g of ploystyrene = 10.46 / 79.9 = 0.1309
From the formula of polystyrene , we have ,
number of moles of Br = 3 * number of moles of Br3C6H3(C8H8)n
0.1309 = 3 * Wt / molar weight
0.1309 = 3*100 / (314.7 + 44n)
0.1309 * ( 314.7 + 44n ) = 300
(314.7 + 44n) = 2291.825
44n = 2291.825 - 314.7
n = 1977.125/44
n = 44.93
n = 45 (approx)
Therefore value of n is 45
-----------------------------------------------------------------------------------------------
Please Approve !
-----------------------------------------------------------
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 !