Answer:
Step-by-step explanation:
To calculate the enthalpy change for the reaction between zinc (Zn) and copper sulfate (CuSO4), we will use the method of calorimetry. This method involves measuring the heat absorbed or released by a reaction and using this information to calculate the enthalpy change of the reaction.
The method for calculating the enthalpy change for this reaction is as follows:
Obtain a calorimeter, such as a bomb calorimeter or a coffee cup calorimeter, and ensure that it is properly insulated to prevent heat loss.
Measure out a known volume of 1 M copper sulfate solution, and carefully add an excess of zinc powder to the solution. Be sure to measure the initial temperature of the solution before the reaction.
Start the reaction by mixing the zinc and copper sulfate together, and monitor the temperature of the solution as the reaction proceeds. Record the final temperature of the solution after the reaction has reached equilibrium.
Use the heat capacity of the calorimeter (Ccal) and the change in temperature (ΔT) to calculate the heat absorbed or released by the reaction. The heat absorbed or released by the reaction can be calculated using the formula: q = Ccal x ΔT
Once you have the heat absorbed or released by the reaction, you can use the molar enthalpy of the reaction (ΔH) to calculate the enthalpy change of the reaction. ΔH = q/ n
where n is the number of moles of Zn that reacted.
Repeat the experiment several times to confirm the results.
It's important to note that to get a precise result, the solution should be well mixed, the reaction should be carried out at constant pressure, and the heat loss should be minimized by using an insulated container.
Also, it's important to check the zinc powder and copper sulfate are not contaminated with other materials that could affect the result.