A coffee-cup calorimeter the temperature rises

Reference no: EM13852772

When 2.150 g of AX (s) dissolves in 200.0 g of water in a coffee-cup calorimeter the temperature rises from 21.2 oC to 32.3 oC. Calculate the enthalpy change (in kJ/mol) for the solution process AX (s) --> A+ (aq) + X- (aq) Assumptions for this calculation: The specific heat of the solution is the same as that of pure water (4.18 J/ g-K). The density of water = 1.000 g/mL. The liquid's final volume is not changed by adding the solid. The calorimeter loses only a negligible quantity of heat. The formula weight of AX = 59.1097 g/mol. Make sure you include the correct sign for the enthalpy change. The units are kJ/mol.

Reference no: EM13852772

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