Chemistry

PbS + 4H₂O₂->PbSO₄ + 4H₂O.

Kindly consider the following figure

Work depends on the path followed by the system so work is path function.

Depletion of ozone is due to CF₂Cl₂

Kindly go through the solution

Since VReal > Videal

So, Z = Real ideal V

$B_2\to \sigma 1s^2{\sigma }^{*}1s^2\sigma 2s^2{\sigma }^{*}2s^2\pi 2p_x^1=\pi 2p_y^1$

Kindly go through the solution 

Hybridisation = sp³d²

Shape – square planar

Order of limiting molar conductivity

$O{H}^{-}>S{O}_4^{2-}>C{l}^{-}>C{H}_{3}CO{O}^{-}$

Higher the acidic strength, lower will be the value of pK_a.

Correct order of pK_a is

$C{H}_{3}COOH>C_6{H}_{5}COOH>HCOOH>O_{2}NC{H}_{2}COOH$