Suppose 300.0 mL of 0.50 M HCl and 300.0 mL of 0.50 M NaOH, both initially at 22.0°C, are mixed in a thermos flask. When the reaction is complete, the temperature is 25.4°C. Assuming that the solutions have the same heat capacity as pure water, compute the heat released (in kJ).

Answer 1

q = mass H2O x specific heat H2O x (Tfinal-Tinitial)
Substitute and solve for q in J and convert to kJ. 600 mL is 600 g for mass.