Worked example 1 An amount of 100g of concentrated H₂SO4 was added to 500cm³ of water to dilute it. It caused the temperature to rise by 15°C. Calculate the heat change accompanying the process. Specific heat capacities of H₂SO4 and H₂O to be 1.5 x 10³JKg¹c¹ and 4.18 x 10³JKg ¹0c-1 respectively, and density of water is 1g/cm³.