Place 50cm3 of 2M hydrochloric acid into a calorimeter200cm3 plastic beaker wrapped in cotton wooltissue paper Record its temperature T1Using a clean measuring cylinder measure another 50cm3 of 2M sodium hydroxide Rinse the bulb of the thermometer in distilled water Determine the temperature of the sodium hydroxide T2Average T2 andT1 to get the initial temperature of the mixture T3