Answer to Question #182110 in General Chemistry for Lauren Barad

Question

How many joules are released when 2.4 g H₂O at 0.0^oC solidify? (Specific Heat = 4.2 J/g^oC, Enthalpy of fusion = 6010 J/mol, Enthalpy of vaporization = 40700 J/mol)

Answer 1

Q = mc$\Delta T$

Q = 2.4×4.18×(25)

Q = 250.8J

Total Energy released = 250.8 + 6010

= 6260.8 J