[ \Delta H = - \fracqn ]
Includes combustion (burning fuels like hexane or propanone), neutralisation (mixing acids and alkalis), and displacement (e.g., adding zinc to silver nitrate).
If your answers aren't matching the mark scheme, check these three common errors: Did you convert from Joules to kiloJoules ( /1000/ 1000 ) before calculating ΔHcap delta cap H ? Most worksheet answers are in The Sign (+/-): If the temperature went up, your final ΔHcap delta cap H value must have a minus sign.
[ \Delta H = - \fracqn ]
Includes combustion (burning fuels like hexane or propanone), neutralisation (mixing acids and alkalis), and displacement (e.g., adding zinc to silver nitrate).
If your answers aren't matching the mark scheme, check these three common errors: Did you convert from Joules to kiloJoules ( /1000/ 1000 ) before calculating ΔHcap delta cap H ? Most worksheet answers are in The Sign (+/-): If the temperature went up, your final ΔHcap delta cap H value must have a minus sign.
