How much heat does calcium oxide produce
when dissolved in water?
You need more information than you have provided.
To determine how much heat calcium oxide (CaO) produces when dissolved in water, we need to refer to the enthalpy of the reaction, also known as the heat of reaction or heat of solution.
Here's how you can find the heat of reaction for dissolving calcium oxide:
1. Look up the balanced chemical equation for the reaction of calcium oxide with water. In this case, it is:
CaO + H2O → Ca(OH)2
2. Find the enthalpy change (ΔH) for this reaction. The ΔH of a reaction can be determined by looking up the values in a reputable thermochemical database or reference book. Alternatively, it can be experimentally measured. The ΔH value represents the amount of heat released or absorbed during a reaction.
3. Once you have found the ΔH value for the reaction, it will indicate whether heat is released (exothermic) or absorbed (endothermic). A negative value of ΔH indicates an exothermic reaction, meaning heat is released. If the ΔH value is positive, it means the reaction is endothermic, and heat is absorbed.
4. The magnitude of the ΔH value will quantitatively represent the amount of heat released or absorbed during the reaction. The units typically used for ΔH are kilojoules (kJ) or joules (J). For example, if the ΔH value of the reaction is -500 kJ, it means that 500 kilojoules of heat are released when 1 mole of calcium oxide reacts with water.
Remember that the ΔH value is usually given per mole of the reactant. So, if you want to determine the heat produced when dissolving a specific amount of calcium oxide, you will need to know the number of moles of CaO involved in the reaction.
Although I cannot provide you with the specific ΔH value for this reaction, you can look it up in chemical databases, resources, or textbooks. Additionally, it is worth mentioning that the heat produced can vary depending on the specific conditions and concentrations of the reactants.