Which of the following statements is correct | vedclass

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(A) For a spontaneous reaction, the Gibbs free energy change must be negative, i.e.,$\Delta G < 0$.In a polymerization reaction, many monomer units co

Vedclass · Accepted Answer

$\Delta G < 0, \Delta H < 0, \Delta S < 0$

Vedclass · Answer

(A) For a spontaneous reaction, the Gibbs free energy change must be negative, i.e.,$\Delta G In a polymerization reaction, many monomer units combine to form a single polymer chain $(n A \rightarrow A_n)$.This process leads to a decrease in the number of particles and an increase in order, resulting in a decrease in entropy, i.e.,$\Delta S Using the Gibbs-Helmholtz equation: $\Delta G = \Delta H - T \Delta S$.Since $\Delta G For $\Delta G$ to remain negative, the enthalpy change $\Delta H$ must be negative and its magnitude must be greater than the magnitude of $T \Delta S$, i.e.,$\Delta H < 0$.

Column-$I$	Column-$II$
$A$. Cellulose	$p$. Natural polymer
$B$. Nylon-$6,6$	$q$. Synthetic polymer
$C$. Protein	$r$. Amide linkage
$D$. Sucrose	$s$. Glycoside linkage

List-$I$	List-$II$
$A$. $(CH_2-C(Cl)=CH-CH_2)_n$	$I$. Cross-linked network
$B$. Nylon-$6,6$	$II$. Elastomer
$C$. $HDP$	$III$. Fibre
$D$. Melamine-formaldehyde	$IV$. Ziegler-Natta catalyst

List-$I$	List-$II$
$A$. Weak intermolecular forces of attraction	$I$. Hexamethylenediamine $+$ adipic acid
$B$. Hydrogen bonding	$II$. $AlEt_3 + TiCl_4$
$C$. Heavily branched polymer	$III$. $2-$chloro$-1,3-$butadiene
$D$. High density polymer	$IV$. Phenol $+$ formaldehyde

Which of the following statements is correct for a spontaneous polymerization reaction?

Similar Questions

Match the chemical substances in Column-$I$ with the type of polymers/type of bonds in Column-$II$.

Column-$I$ Column-$II$

$A$. Cellulose $p$. Natural polymer

$B$. Nylon-$6,6$ $q$. Synthetic polymer

$C$. Protein $r$. Amide linkage

$D$. Sucrose $s$. Glycoside linkage

The bond energy of $C=C$ and $C-C$ at $298 \ K$ are $590 \ kJ \ mol^{-1}$ and $331 \ kJ \ mol^{-1}$ respectively. The enthalpy of polymerisation per mole of ethylene is $..... \ kJ$.

Match the following:
List-$I$ List-$II$
$A$. $(CH_2-C(Cl)=CH-CH_2)_n$ $I$. Cross-linked network
$B$. Nylon-$6,6$ $II$. Elastomer
$C$. $HDP$ $III$. Fibre
$D$. Melamine-formaldehyde $IV$. Ziegler-Natta catalyst

Polyethylene is prepared from calcium carbide as follows:
$CaC_2 + 2H_2O \to Ca(OH)_2 + C_2H_2$
$C_2H_2 + H_2 \to C_2H_4$
$nC_2H_4 \to (-CH_2-CH_2-)_n$
Calculate the amount of polyethylene produced from $64 \ kg$ of $CaC_2$. (in $kg$)

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