Ask Question
4 November, 01:21

A sample of benzene was vaporized at 25◦C. When 37.5 kJ of heat was supplied, 95.0 g of the liquid benzene vaporized. What is the enthalpy of vaporization of benzene at 25◦C?

1. 30.8 kJ/mol

2. 13.4 kJ/mol

3. 43.0 kJ/mol

4. 6.09 kJ/mol

5. 25.6 kJ/mol

+5
Answers (1)
  1. 4 November, 04:27
    0
    Enthalpy of vaporization = 30.8 kj/mol

    Explanation:

    Given dа ta:

    Mass of benzene = 95.0 g

    Heat evolved = 37.5 KJ

    Enthalpy of vaporization = ?

    Solution:

    Molar mass of benzene = 78 g/mol

    Number of moles = mass / molar mass

    Number of moles = 95 g / 78 g/mol

    Number of moles = 1.218 mol

    Enthalpy of vaporization = 37.5 KJ/1.218 mol

    Enthalpy of vaporization = 30.8 kj/mol
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “A sample of benzene was vaporized at 25◦C. When 37.5 kJ of heat was supplied, 95.0 g of the liquid benzene vaporized. What is the enthalpy ...” in 📘 Chemistry if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers