When 10.0 g of ammonium nitrate is dissolved in 100 cm3 of water, the temperature of the solution decreases from 19.0°C to 10.5°C, how do I solve the following?
a) Compare the total enthalpy of the reactants with that of the products and state which is greater.
b) Classify this reaction as endothermic or exothermic.
c) State which chemical bonds were broken when the ammonium nitrate
dissolved in the water.
a) Compare the total enthalpy of the reactants with that of the products and state which is greater.
b) Classify this reaction as endothermic or exothermic.
c) State which chemical bonds were broken when the ammonium nitrate
dissolved in the water.
1 Answer
(a)
Explanation:
(a) Enthalpy of formation of reactants and products
We have the reaction
∴
(b) Exothermic or endothermic?
The temperature decreased when the ammonium nitrate dissolved in the water.
Energy left the system, so the reaction is endothermic.
(c) Bonds broken
The ionic bonds between the