Chemistry - Thermochemistry Question with Solution | TestHub

${}_{(\mathrm{P})}{\mathrm{Ag}}_{(\mathrm{aq})}^{\oplus }+{\mathrm{Cl}}_{(\mathrm{aq})}^{-}\to \underset{\text{ (silver mirror) }}{{\mathrm{AgCl}}_{(\mathrm{s})}\downarrow }$

It is Drecipition reaction

So, $\Delta {\mathrm{rH}}^{\circ }={\Delta }_{\mathrm{ppt}}\mathrm{H}$

$\Delta -3\Delta {\mathrm{H}}_{\text{reaction }}=\Delta {\mathrm{H}}_{\text{Precipitution }}$

(Q) $\underset{\text{Combustion of }{\mathrm{C}}_{\text{diamod }}}{\underbrace{{\mathrm{C}}_{(\text{dia })}+{\mathrm{O}}_2(\mathrm{g})}}+{\mathrm{O}}_2⟶{\mathrm{CO}}_2(\mathrm{g})$

${\Delta }_{\mathrm{r}}{\mathrm{H}}^{\circ }={\Delta }_{\text{cimbustion }}$

$(\mathrm{R})\mathrm{Mg}(\mathrm{s})⟶\mathrm{Mg}(\mathrm{g})\Delta {\mathrm{H}}_{\mathrm{r}}^{\circ }=\Delta {\mathrm{H}}_{\text{sublimation }}$

Solid $\stackrel{\text{ Sublimation }}{\to }$ gas

$\mathrm{R}\to (1)$

(S) ${\mathrm{HCl}}_{(\mathrm{aq})}+{\mathrm{NaOH}}_{(\mathrm{aq})}\to {\mathrm{NaCl}}_{(\mathrm{aq})}+{\mathrm{H}}_2\mathrm{O}$

Acid + Base ⟶ Neutralisation

$\mathrm{S}⟶2$