19.5 g of $CH_2FCOOH$ is dissolved in 500 g of water. The depression in the freezing point of water observed is 1.00$^{\large\circ}$ C. Calculate the van’t Hoff factor and dissociation constant of fluoroacetic acid.

Question

$\begin{array}{1 1}1.0753,3.07\times 10^{-3}\\2.0753,2.07\times 10^{-3}\\0.0753,0.07\times 10^{-3}\\4.0753,4.07\times 10^{-3}\end{array}$