Electrochemistry by carl h hamann pdf6/13/2023 The energy is positive (ie unfavourable) when q1 and q2 have the same sign, but is negative (implying an attractive force) when q1 and q2 have opposite signs. Where er is the relative permittivity of the medium and e0 the permittivity of free space. The energy of interaction between two particles of charge q1 and q2 at a distance r from one another is given by U12 ΒΌ These lattice sites are occupied not by (neutral) atoms but by negatively charged chlorine or positively charged sodium ions and the crystal is held together by the coulombic forces that exist between all electrically oppositely charged species. In solid crystals such as NaCl, electrical charges are localised on those sites that form the lattice. 1 Foundations, Definitions and Concepts 1.1 Ions, Electrolytes and the Quantisation of Electrical Charge
0 Comments
Leave a Reply. |