how much heat does calcium oxide produce
when dissolved in water?
is that you
To determine how much heat calcium oxide (CaO) produces when dissolved in water, we need to look at the enthalpy change of the reaction. The enthalpy change is also known as the heat of reaction and represents the amount of heat energy released or absorbed during a chemical reaction.
The reaction of calcium oxide with water is an exothermic process, meaning it releases heat. The chemical equation for this reaction is:
CaO(s) + H2O(l) → Ca(OH)2(aq)
The enthalpy change of this reaction can be determined experimentally by measuring the heat evolved or by using Hess's law.
If we refer to experimental data, the enthalpy change for the reaction between calcium oxide and water is approximately -65.2 kJ/mol. This means that for every mole of calcium oxide that reacts with water, 65.2 kJ of heat energy is released.
Therefore, the amount of heat produced when a certain mass of calcium oxide is dissolved in water can be calculated using the following steps:
1. Determine the moles of calcium oxide (CaO) based on its mass.
2. Calculate the heat produced by multiplying the moles of CaO by the enthalpy change (-65.2 kJ/mol).
It's important to note that the amount of heat produced may vary depending on the amount of calcium oxide and water used in the reaction. Additionally, factors such as temperature and reaction conditions can also influence the heat generated.