Question

If in solvent, n simple molecules of solute combine to form an associated molecule, $x$ is degree of association the Van't Hoff's factor ${}^{\prime }{i}^{\prime }$ is equal to:

• A. $\frac{1}{1-nx}$
• B. $\frac{1-x+nx}{1}$
• C. $\frac{1-x+\frac{x}{n}}{1}$
• D. $\frac{\frac{x}{n}-1+x}{1}$

Answer 1

The correct option is C $\frac{1-x+\frac{x}{n}}{1}$

In solvent, n simple molecules of solute combine to form an associated molecule, $x$ is degree of association the Van't Hoff's factor ${}^{\prime }{i}^{\prime }$ is equal to:

$Va{n}^{\prime }tHof{f}^{\prime }sfactor\left(i\right)=\frac{1-x+\frac{x}{n}}{1}$

$x$=degree of association,

$n$=simple molecule of solute combine to form an associated molecule,

$i$= Van'tHoff's factor.

So the answer is C.