Determine the degree of association (polymeri | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The reaction is $6 HCHO \rightleftharpoons C_6H_{12}O_6$. Let the initial concentration of $HCHO$ be $c$. At equilibrium,the concentration of $HCH

Vedclass · Accepted Answer

$0.96$

Vedclass · Answer

(D) The reaction is $6 HCHO ightleftharpoons C_6H_{12}O_6$. Let the initial concentration of $HCHO$ be $c$. At equilibrium,the concentration of $HCHO$ is $c(1-\alpha)$ and the concentration of $C_6H_{12}O_6$ is $\frac{c\alpha}{6}$. The total number of moles at equilibrium is $n_{total} = c(1-\alpha) + \frac{c\alpha}{6} = c(1 - \frac{5\alpha}{6})$. The van't Hoff factor $i$ is given by $\frac{n_{total}}{n_{initial}} = \frac{c(1 - \frac{5\alpha}{6})}{c} = 1 - \frac{5\alpha}{6}$. Also,$i = \frac{M_{theoretical}}{M_{observed}} = \frac{30}{150} = 0.2$. Equating the two expressions: $1 - \frac{5\alpha}{6} = 0.2$. $\frac{5\alpha}{6} = 0.8$. $\alpha = \frac{0.8 	imes 6}{5} = 0.96$.

Determine the degree of association (polymerization) for the reaction in aqueous solution $6 HCHO \rightleftharpoons C_6H_{12}O_6$. If the observed (mean) molar mass of the mixture is $150 \ g/mol$. (Given: Molar mass of $HCHO = 30 \ g/mol$)

Similar Questions

Acetic acid dissolved in benzene shows a molecular mass of

In a solution with molality $m$,if the solute exists in the form of a dimer,which of the following cannot be the elevation in the boiling point of the solution?

$20 \ g$ of a binary electrolyte (molar mass = $100 \ g \ mol^{-1}$) is dissolved in $500 \ g$ of water. The freezing point of the solution is $-0.74 \ ^oC$. Given $K_f = 1.86 \ K \ kg \ mol^{-1}$,the degree of dissociation of the electrolyte is ......... $\%$.

If a solute associates in a solvent, its experimentally calculated molar mass using the boiling point elevation method will be

If a $0.01 \ m$ aqueous solution of an electrolyte freezes at $-0.056 \ ^{\circ}C$,calculate the van't Hoff factor $(i)$ for the electrolyte. (Cryoscopic constant of water $K_{f} = 1.86 \ K \ kg \ mol^{-1}$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module