Molecular mass of NaCl determine by osmotic pressure measurement is found to be half of the actual value. Account for it .

Osmotic pressure is measured quickiy and accurately by

Mr. Raju has determined the molecular masses of different solutes in different solvents by osmotic pressure measurements and present them in the following table. Please help him to complete the table .

The value of molecular mass determined by colligative properties are sometimes incorrect. Explain how these abnormalities occur in the case of benzoic acid in benzene and KCl in water ?

Explain why the molecular masses of some substances determined with the help of colligative properties are lower than actual values.

Explain Why'the molecular masses of some substances determined with the help of colligative properties are Higher than actual values.

The value of molecular mass determined by colligative properties are sometimes incorrect. What is Van't Hoff factor ?

Assertion : Molecular mass of KCl calculated on the basis of colligative properties will be lower than the normal molecular mass. Reason : Experimentally determined molar mass is always lower than the true value. a)If both (A) and (R) are correct and (R) is the correct explanation of(A). b)If both (A) and (R) are correct, but (R) is not the correct explanation of (A). c)If (A) is correct, but (R) is incorrect. d)If both (A) and (R) are incorrect.

In the determination of number of average molecular weight of polymers by osmotic pressure experiment, (pi//C) along Y -axis and 'C' along X-axis graph, Y intercept i.e, (pi//C) , is equal to

A person's blood pressure is found to be about 140/100mm Hg. How do you measure BP?