Chemistry - Complete P-block Question with Solution | TestHub

(P) $\Delta {\mathrm{H}}_{\mathrm{Re}\text{ action }}^{\mathrm{o}}=-\mathrm{ve}$

(1) Combustion of ${\mathrm{B}}_2{\mathrm{H}}_6$

(Q) $\Delta {\mathrm{H}}_{\mathrm{Re}\text{ action }}^{\mathrm{o}}=+\mathrm{ve}$

(2) Dinitrogen combines with hydrogen at about 773 K and 200 atm pressure

(R) Forward reaction leads to decreases in volume ( $\Delta {\mathrm{n}}_{\mathrm{g}}=-\mathrm{ve}$ )

(3) A tube containing nitrogen (IV) oxide placed in a beaker containing freezing mixture at 270 K

(S) Molecules(s) has/have unpaired electrons either in reactant side or in product side in balance reaction

(4) Decomposition of ${\mathrm{SO}}_{3(\mathrm{g})}$ to another oxide of sulphur and other product

(5) Formation of ozone from dioxygen