+1 vote
in Chemistry by (40.3k points)

The figure below is the plot of potential energy versus internuclear distance (d) of H2 molecule in the electronic ground state. What is the value of the net potential energy E0 (as indicated in the figure) in kJ mol−1 , for d = d0 at which the electron-electron repulsion and the nucleus-nucleus repulsion energies are absent? As reference, the potential energy of H atom is taken as zero when its electron and the nucleus are infinitely far apart. Use Avogadro constant as 6.023 × 1023 mol−1 .

Please log in or register to answer this question.

1 Answer

+1 vote
by (40.2k points)

At d = d0, nucleus-nucleus & electron-electron repulsion is absent. 

Hence potential energy will be calculated for 2 H atoms. (P.E. due to attraction of proton & electron)

For 2 H atoms = –5246.49 kJ/mol

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.