Heat of Combustion (HSC SSCE Chemistry): Flashcards

Heat released when 1 mole burns completely in oxygen

Positive (measures heat released)

Negative (heat absorbed by system is negative)

Exothermic (releases heat)

Heat absorbed by water (conservation of energy)

$q = mc\Delta T$

$4.18 \times 10^3$ J K$^{-1}$ kg$^{-1}$

Larger hydrocarbons have higher heats of combustion

$n = \frac{\text{mass}}{\text{molar mass}}$

Heat released ÷ moles of substance burnt