Name

Period

Date

Heat of Solution Lab

NH₄NO₃

INFO

NH₄NO₃ molar mass = 80.044 g/mol

q = m∆TCp_water

Cp_water = 4.184 J/g^oC

H_solution = q/moles

Heat of solution for NH₄NO₃ = 25690 J/mol (WYSHG)

DATA

1) m_water = 100.0 g (100.0 mL)

2) m_paper = _____ g

3) m_paper-NH4NO3 = _____ g (1 tablespoon NH₄NO₃)

4) T_begin-water = _____ ^oC (just water, make warm)

5) T_final-water = _____ ^oC (swirl while waiting)

CALCULATIONS - Show all work.

6) m_NH4NO3 = _____ g

7) moles NH₄NO₃ = _____ mol

8) ∆T_water = _____ ^oC (absolute value)

* 9) q_water = _____ J

*10) H_solution = _____ J/mol (WYG)

*11) % disc. = _____ %