State the calorimeter loses only negligible quantity of heat

Reference no: EM13186747

When 2.950 g of AX (s) dissolves in 100.0 g of water in a coffee-cup calorimeter the temperature rises from 22.0 oC to 31.7 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 = 52.7398 g/mol. Make sure you include the correct sign for the enthalpy change. The units are kJ/mol.

Reference no: EM13186747

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