Class 12th

(a)  [1rCl (CO) (PPh₃)₂] carbonylchloridobis (triphenylphosphine) iridium (I).

(b)  Coordination number of Ir is four. Ir is in (+1) oxidation state with 4d⁸ configuration. It is trans isomer, so its geometry should be square planar.

(c) All electrons are paired, hence diamagnetic

(d)  Can exhibit GI only.

Fe acts a catalyst and Mo acts as promoter in Haber's process.

BOD value less than 5ppm is considered as clean water and BOD value more than 10ppm is considered as polluted water.

Reaction rate is used to measure how fast or slow reactions occur per unit time. The rate constant is a proportionality factor that remains constant for every reaction.

Yes, in elementary reactions, order and molecularity can be the same, but this is not always the case because order is an experimental quantity, and molecularity is a theoretical concept.

Reaction Kinetics, also known as chemical kinetics, is the study of the rate of chemical reaction and the factors affecting the reaction rate, such as temperature, concentration, and catalyst.

A ->2B + C

t = 0          a      0       0

t = 10       a – x  2x     x

t ->    $\infty$ 0       2a    a

$\therefore$ $\begin{array}{l}a+2x\propto 176\\ 3a\propto 270\\ a\propto 90\\ 2x\propto 86\\ x\propto 43\\ a-x\propto 90-43\\ a-x\propto 47\end{array}$