Calculation an unknown enthaply change using a Hess' law cycle

Calculation an unknown enthalpy change using a Hess' law cycle :

HazCard : 47A-91A

• 50 cc measuring cylinder

• distilled water

• polystyrene cup

• large beaker for the polystyrene cup

• Digital thermometers

• NaOH solide (4g)

• Glove to wear above the lab coat sleeves when crushing the NaOH

• pestle and mortar (pellets NaOH)

• Balances

• weighing boat

• Burette

• Funnel for burette

• pipette fillers

• 2.0Mol HCl

• 2.0Mol NaOH