Finding Work with constant pressure and temp.

The work done in this reaction is 826 J.In summary, the conversion of propene (C3H6) to dichloromethane (CH2Cl2) occurs through the reaction C3H6(g) + 3Cl2(g) → 3CH2Cl2(g) with a standard enthalpy change of -306.98 kJ mol-1 at 298.15 K. The standard enthalpy of formation of CH2Cl2(g) is -95.52 kJ mol-1. At constant pressure and a temperature of 298.15 K, the production of one mole of CH2Cl2(g) by this reaction involves a heat transfer of q, work
  • #1
phizzle86
3
0
The conversion of propene (C3H6) to dichloromethane (CH2Cl2) takes place according to the
reaction
C3H6(g) + 3Cl2(g) 6 3CH2Cl2(g).
At 298.15 K, the standard enthalpy change of this reaction is -306.98 kJ mol-1 and the
standard enthalpy of formation of CH2Cl2(g) is -95.52 kJ mol-1.

Calculate q, w, deltaU, and deltaH for the production of one mole of CH2Cl2(g) by this reaction
at a constant pressure of one bar and a temperature of 298.15 K.



I'm having trouble finding the work done, how can you determine the work done if there's no change in volume? Please help (A: w=826 J)

Thank you.
 
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  • #2
If the volume changes at constant pressure work is done. Work = pressure X area X distance = pressure X volume
 

FAQ: Finding Work with constant pressure and temp.

How does constant pressure and temperature affect finding work?

Constant pressure and temperature are important factors in the chemical and physical properties of substances. This means that when looking for work, it is essential to understand how these factors may impact the job and the work environment. For example, in industries such as food or pharmaceuticals, precise temperature and pressure control may be necessary for certain processes to function properly, and potential employees may need to have a strong understanding of these concepts.

What skills or knowledge are needed to work with constant pressure and temperature?

In addition to a strong understanding of chemistry and physics, individuals looking to work with constant pressure and temperature should have knowledge of laboratory equipment and techniques, data analysis, and safety protocols. It may also be beneficial to have experience in specific industries or with certain types of equipment used to maintain constant pressure and temperature.

How does constant pressure and temperature affect the safety of the work environment?

Working with constant pressure and temperature can pose potential hazards if not properly managed. For example, high-pressure systems can be dangerous if not operated correctly, and extreme temperatures can cause burns or other injuries. Employers should have strict safety protocols in place, and employees should be trained in proper handling and emergency procedures to ensure a safe work environment.

What industries commonly require working with constant pressure and temperature?

Industries that commonly require working with constant pressure and temperature include chemical manufacturing, food and beverage production, pharmaceuticals, and research and development. These industries often involve processes that require precise temperature and pressure control to achieve desired outcomes.

How can one gain experience in working with constant pressure and temperature?

One way to gain experience in working with constant pressure and temperature is through internships or co-op programs in industries that require these skills. Another option is to take courses or attend workshops on specific techniques or equipment used in maintaining constant pressure and temperature. Additionally, hands-on experience in a laboratory setting or through research projects can also be valuable in developing skills in this area.

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