To calculate the enthalpy change for the hydrolysis of 50 grams of sucrose, we first need to determine the number of moles of sucrose present in the solution. Moles of sucrose = mass of sucrose / molar mass of sucroseMoles of sucrose = 50 g / 342.3 g/molMoles of sucrose 0.146 molesNow that we have the number of moles of sucrose, we can calculate the enthalpy change for the hydrolysis reaction using the given enthalpy change per mole of sucrose.Enthalpy change = moles of sucrose enthalpy change per mole of sucroseEnthalpy change = 0.146 moles -564.8 kJ/mol Enthalpy change -82.47 kJThe enthalpy change for the hydrolysis of 50 grams of sucrose when dissolved in 500 ml of water at 25C is approximately -82.47 kJ.