Answer to Question #204168 in General Chemistry for Jasmine Enriquez

Question

In a coffee-cup calorimeter, 100.0 g of H2O and 100.0 mL of HCl are mixed. The HCl had an initial temperature of 44.6oC and the water was originally at 24.6oC. After the reaction, the temperature of both substances is 31.3 oC.

2.1. Was the reaction exothermic or endothermic? Explain your answer

2.2. Calculate how much heat HCl lost or gained after the reaction

Answer 1

2.1)Exothermic since heat was finally released to the environment.

2.2)Heat lost by HCl=213.4J