+91-87964 74404
FlagBACK
Question icon
Grade 12Inorganic Chemistry

A solution containg 1 gm per dm3 of urea is isotonic with 5% solution of a nonvolatile solute. What is the molecular mass of this non volatile solute

Profile image of Sreeyuktha
9 Years agoGrade 12
Answers icon

1 Answer

Profile image of Vikas TU
9 Years ago
Given information : 
Urea arrangement is 1gm for every dm3, so m=1g and V = 1000 ml 
Non unstable arrangement is 5%, so m=5g and V = 100ml 
General Gas condition 
PV = nRT      PV =m/M RT 
PM = m/V RT 
For urea P1 = (m_1 RT)/(M_1 V_1 ) 
For Non unstable Solute P2 = (m_2 RT)/(M_2 V_2 ) 
Since both arrangements are isotonic, so P1 = P2 
Subsequently we can compose 
(m_1 RT)/(M_1 V_1 )=(m_2 RT)/(M_2 V_2 ) 
m_1/(M_1 V_1 )=m_2/(M_2 V_2 ) 
1g/(60 g/mol X 1000ml)=5g/(M_2 X100ml) 
M_2=3000 g/mol 
In this way, atomic weight of non unstable solute is 3000 g/mol. 

Other Related Questions on inorganic chemistry

question mark
Total number of structural isomers of 
[Co(NH3)6][Cr(CN)6]
inorganic chemistry
1 Answer Available

Last Activity: 3 Years ago

question mark
Why is boiling point of Cesium higher than that of Rubidium
 
inorganic chemistry
1 Answer Available

Last Activity: 3 Years ago

question mark
which isomer mentioned in (a) is water soluble and why?
inorganic chemistry
1 Answer Available

Last Activity: 3 Years ago

question mark
A gaseous mixture contains CO2 and CO the mass of the mixture is 200g and they are presenting equal fraction of moles . Find the total no. of O-atoms present in the mixture.
inorganic chemistry
1 Answer Available

Last Activity: 4 Years ago

question mark

a gaseous mixture contains O2 , N2 and He in equal fraction of moles . Find the mass of He if 28g of N is present and 32g of O is present.

inorganic chemistry
1 Answer Available

Last Activity: 4 Years ago