Question
What is the total energy change if 150.0 grams of ice at 0.0 oC are melted, then the water is warmed to 45.0 oC? Is this process endothermic or exothermic? ƒ´Hf = 6.01 kJ/mol(multiple steps)
Answers
DrBob222
q1 to melt ice solid to liquid water at zero C. .
q1 = mass ice x heat fusion
q2 to warm liquid water from zero to 45 C.
q21 = mass H2O x specific heat H2O x (T final-T initial)
Total = q1 + q2
q1 = mass ice x heat fusion
q2 to warm liquid water from zero to 45 C.
q21 = mass H2O x specific heat H2O x (T final-T initial)
Total = q1 + q2