25.0 cm of 2.0mol dm-3 hydrochloric acid, HGI, was added to 50.0 cm of 2.0moldm sodium hydroxide, NaOH. The starting temperature was 22 "C and the maximum temperature reached was 29 °C. Equation 3.1 below can be used to calculate the enthalpy change of neutralisation: Equation 3.1 where c=4.18Jg-'K-1 q=mcAT

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