Ncert Solutions Chemistry Class 12th

Kindly consider the following figure

S -> styrene

Buta-1, 3-diene     Styrene

${\left[FeC{l}_4\right]}^{2-}\Rightarrow$

$\begin{array}{l}n=4\\ \mu =\sqrt[]{4\left(4+2\right)}\\ =4.90BM\end{array}$                                                                          

[Co (C₂O₄)₃]^3- Þ Co³⁺

Co => [Ar]4s²3d⁷

Co⁺³ = [Ar]4s⁰3d⁶

  $\mu =\sqrt[]{n\left(n+2\right)}=\sqrt[]{1\left(3\right)}=1.73BM$         

VOSO₄ -> V⁴⁺ Reducing agent

Cr₂O₃ -> Amphoteric oxide

Red colour of ruby due to Cr³⁺ present in Al₂O₃

Ru⁸⁺ -> oxidizing agent

Aluminium - Kaolinite

Iron - Siderite

Copper - Malachite

Zinc  - Calamine

Blood – Negatively charged colloid.

According to Hardy – Schulze Rule

FeCl₃ is more efficient for blood clotting

Valium – Tranquilizer

Morphine – Analgesic

Norethindrone – Antifertility drug

Vitamin B₁₂ – Pernicious anaemia

Density = $\frac{}{}$ $\frac{mass}{volume}$

Cu > Co > Fe > Cr > Zn

(1) $C{r}^{+1}=4s^{0}3d^{5}M{n}^{+2}=4s^{0}3d^5$  

(2)    $N{i}^{+2}=4s^{0}3d^{8}C{u}^{+}=4s^{0}3d^{10}$

(3) $F{e}^{+2}=4s^{0}3d^{6}C{o}^{+}=4s^{1}3d^7$  

(4)  $V^{+2}=4s^{0}3d^{3}C{r}^{+}=4s^{o}3d^5$

Freundlich adsorption Isotherm

$\left(\frac{x}{m}\right)=k{\left(P\right)}^{\frac{1}{n}}$           

At moderate pressure ;  $\frac{x}{m}$ varies non-linearly with P.

So, $x=\frac{1}{n}$