calculate the expansion work done when 50 g of water is electrolyzed under constant pressure at 25 c...why i get 6.8kj
To calculate the expansion work done during electrolysis, you need to consider the change in volume of the water as it is electrolyzed. However, in the given question, there is no information provided about the change in volume or any other details that would allow us to directly calculate the expansion work. Therefore, it is not possible to determine the exact value of the expansion work based on the given information alone.
However, it's important to note that during the process of electrolysis, the water molecule is broken down into its constituent elements, hydrogen and oxygen. This reaction involves a change in the volume of the water. The exact volume change will depend on factors such as the current applied, duration of electrolysis, and the type and conditions of the electrodes used.
If you have additional information, such as the volume change during electrolysis, you can use the equation:
Expansion work (W) = Pressure (P) x Change in Volume (ΔV)
Where:
Pressure (P) is the constant pressure under which the electrolysis is performed, and
Change in Volume (ΔV) is the difference between the initial and final volumes of the water.
Please provide more information or clarify the question if you would like a more accurate calculation of the expansion work.