Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

JEE Class main Answered

In order to determine the molecular weight of a particular protein,0.01g of the protein was dissolved in water to make 2.93mL of solution. The osmotic pressure was determined to be 0.821 torr 20.00c at . What is the molecular weight of the protein?
Asked by s.ojaswini17 | 05 Feb, 2019, 02:29: AM
answered-by-expert Expert Answer
Given:
 
Weight of protein = 0.01 g
 
Volume of solution = 2.93 ml 
 
                            =2.93× 10-3 litre
 
Osmoti pressure Π = 0.821 torr
 
                           = 0.00108 atm
 
Temperature T = 20 °C
 
                      = 20 + 273 
 
                      =293 K
 
Molecular weight of the protein  M =?
 
R = 0.0821 litatmmol-1K-1
 
We know,
 
Molecular weight  = 
 
 
straight M space equals WRT over πV space space space space equals fraction numerator 0.01 cross times 0.0821 cross times 293 over denominator 0.001 cross times 2.93 space cross times space 10 to the power of negative 3 end exponent end fraction space space space space equals fraction numerator 0.241 over denominator 293 cross times space 10 to the power of negative 5 end exponent end fraction space space space equals 82300 space straight g divided by mol 
 
Molecular weight of protein is 82300 g/mol
 
Answered by Varsha | 05 Feb, 2019, 11:58: AM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
JEE main - Chemistry
A solution containing 0.85 g of Z n C l 2 in 125.0 g of water freezes at − 0.23 o C . The apparent degree of dissociation of the salt is : ( k f for water= 1.86 K k g m o l − 1 , atomic mass; Z n = 65.3 and C l = 35.5 )
Asked by amarnathreddyp19 | 29 Mar, 2024, 06:47: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
Mole fraction of ch4 in a solution of 32g of ch4 and 256g of oxygen is?
Asked by atharvamane801 | 14 Jan, 2024, 12:07: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
what is azeotropic mixture, pls explain in simple words and in depth
Asked by bhyogita884 | 12 Jul, 2022, 02:55: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
what change is observed in boiling point of solvent when amount of solute is doubled?  
Asked by abdulraqeeb437 | 16 Jun, 2022, 08:38: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
Will 2 liquids which have same intermolecular force between their molecules (means intermolecular force between b-b= intermolecular force between a-a) have necessarily same vapour pressure???
Asked by akshatmi2005 | 21 May, 2021, 02:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
Calculate the molar conductance of 0.01M solution of an electrolyte which has a resistance of 210ohms at 298K. Cell constant is 0.88cm-1 
Asked by mrudulmahadev1311 | 20 Aug, 2019, 08:40: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
Sir while solving ,plz tell me each term of formula being applied here and the calculations .
question image
Asked by vishakhachandan026 | 16 Aug, 2019, 07:47: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
Benzene and toulene form an ideal solution. The vapour pressure of benzene and toulene are 75 mm and 22 mm at 20°c.If the mole  fraction of benzene  and toulene in vapour phase are 0.63 and 0.37 respectively. Calculate the vapour pressure of ideal mixture.
Asked by sunilpatil4411 | 06 Mar, 2019, 07:34: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
Calculate the number of grams of glycerol C3H5(OH)3(MW=92.1g/mol) , that must be dissolved in5 520 gm   grams of water to raise the boiling point to 102.000c
Asked by s.ojaswini17 | 06 Feb, 2019, 01:59: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
In order to determine the molecular weight of a particular protein,0.01g of the protein was dissolved in water to make 2.93mL of solution. The osmotic pressure was determined to be 0.821 torr 20.00c at . What is the molecular weight of the protein?
Asked by s.ojaswini17 | 05 Feb, 2019, 02:29: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×