Chemistry

An alkali metal oxide of formula MO₂ is super oxide which is formed by K and Rb. KO₂ has pale yellow colour and paramagnetic nature, while alkaline earth metal oxides formula MO₂ are peroxide and diamagnetic nature.

Product formed after EAS reaction (Coupling reaction)

Only (A) and (B) structures have resonance effect. In (A) benzyllic resonance and in (B) allylic resonance of carbocation.

Enzymes are the form of proteins and highly specific regarding temperature and pH change. It also lowers the activation energy for biochemical reaction.

Following are the dihedral angles of H₂O₂ in gas phase and solid (Reverse with respect to question).

Change of angle is the changing of intermolecular interaction in different phase

Kl acts as a reducing agent for $C{u}^{2+}\left[2C{u}^{++}+4Kl\to C{u}_2{l}_2+l_2+4K^{+}\right]$

In strong field of octahedral complex of Fe²⁺, the electronic configuration is,

$F{e}_{26}^{2+}\to \left[Ar\right]3d^{6}4s^0$

Number of unpaired electrons are zero in the presence of strong field ligand.

Hence, spin only magnetic moment = $\sqrt[]{n\left(n+2\right)}=0BM\left(n=0\right)$

High leaving tendency corresponds to high reactivity towards hydrolysis. Hence order is.

Anhydride of HNO₃ produced by the treatment of P₄O₁₀ (anhydring reagent) in ratio of 4 : 1 is N₂O₅ which is acidic in nature. $4HN{O}_3+P_4{O}_{10}\to \underset{Acidicnature}{\underset{?}{2N_2{O}_5}}+{\left(HP{O}_3\right)}_4$

Calcinations is the decomposition in absence of air, $ZnC{O}_3\underset{\Delta }{\overset{}{\to }}ZnO+C{O}_2\uparrow$ ${}_{}\underset{}{\overset{}{}}{}_{}$

while roasting is the oxidation process, $2ZnS+3O_2\to 2ZnO+2S{O}_2\uparrow$