Energetics IB SL Free Essays

A reaction In which energy Is absorbed. If your reactants are at a lower energy level than your products then the reaction Is endothermic this means It has a AHA Exothermic: A reaction in which energy is released. If your reactants are at a higher e energy level than your products then the reaction is exothermic this means it has a Standard Enthalpy ( HA) The internal energy stored in the reactants. We will write a custom essay sample on Energetics IB SL or any similar topic only for you Order Now Only changes in enthalpy can be measured. When some solid barium hydroxide and solid ammonium tessellate were reacted together, the temperature of the surroundings was observed to decrease from 15 co t o- 4 co. What can be deduced from this observation? A. The reaction is exothermic and AH is negative. B. The reaction is exothermic and AH is positive. C. The reaction is endothermic and AH is negative. D. The reaction is endothermic and AH is positive. How to cite Energetics IB SL, Papers