Chemistry

Structure (I) is anti conformer.

Structure (II) is fully eclipsed conformer.

Structure (III) is skew or gauche conformer.

Structure (IV) is partially eclipsed.

$\therefore$ order of stability

(I) > (III) > (IV) > (II)

Order of P.E. is (II) > (IV) > (III) > (I).

Na/H₂ can not reduce a functional group as Na does not behaves as catalyst here.

Stability order of oxides (X₂O) is,

l₂O > Cl₂O > Br₂O

Bonds of halogen & oxygen are covalent due to less EN difference.

Stability of (I - O) bond is higher due to less polarity and that of (Cl-O) bond is higher due to multiple bonding.

(a) Cell constant = $\left(\frac{\mathcal{l}}{A}\right)=m/m^2=m^{-1}$  

(b) molar conductivity $\left({\lambda }_m\right)=\frac{\kappa *1000}{molarity}$

= Scm² mol^-1

(c) Conductivity $\left(\kappa \right)=\frac{1}{\rho }=\frac{\mathcal{l}}{RA}$

$={\Omega }^{-1}{m}^{-1}$                                

(d) degree of dissociation = $\frac{numberofmoledissociated}{Totalmole}$ , it is dimensionless 

Ethylene glycol (HO – CH₂ – CH₂ – OH) and terephthalic acid

Rate constant depends on temperature as

$K=A{e}^{-Ea/RT}$              

Here; as T increases rate constant increases exponentially.

Kindly consider the following figure

In reaction ;

  $5F{e}^{2+}+Mn{O}_4^{-}+8H^{+}\to M{n}^{2+}+4H_{2}O+5F{e}^{3+}$              

Colour of Fe²⁺ is green and that of Fe³⁺ is yellow.

$ln{\left[Co{\left(CN\right)}_6\right]}^{4-},$ Co has +2 oxidation state

Hence, electronic configuration of CO2+ is $\left[Ar\right]3d^{7}4s^0$ ${}^{}{}^{}$ . In complex   ${\left[Co{\left(CN\right)}_6\right]}^{4-},$ ${{}_{}}^{}$given ligand CN is strong hence, after pairing in d-subshell, total number of unpaired electron =

$\therefore$ spin magnetic moment =   $\sqrt[]{1\left(1+2\right)}=\sqrt[]{3}=1.73BM$ $\text{exception 25:}\text{exception 25:}$

$=1.73BM\approx 2.0BM$

Kindly conside the following Image