2-2. Charge Conservation and Electric Current In an electrolyte solution of uniform composition the current density i and electrical potential are related as i= where is the electrical conductivity (a constant). This is analogous to Ohm's law. The usual units of i are Cs1m2 or Am2. The charge density in an electrolyte solution (e) is e=FiziCi where F is Faraday's constant (9.652104Cmol1),zi is the valence of ion i, and the summation includes all types of ions present. Except near charged surfaces, electroneutrality (e=0) is a good approximation. Assume that this holds and note that charge is conserved in homogeneous reactions. (a) What can be inferred by applying conservation of charge to an arbitrary control volume? 2-2. Charge Conservation and Electric Current In an electrolyte solution of uniform composition the current density i and electrical potential are related as i= where is the electrical conductivity (a constant). This is analogous to Ohm's law. The usual units of i are Cs1m2 or Am2. The charge density in an electrolyte solution (e) is e=FiziCi where F is Faraday's constant (9.652104Cmol1),zi is the valence of ion i, and the summation includes all types of ions present. Except near charged surfaces, electroneutrality (e=0) is a good approximation. Assume that this holds and note that charge is conserved in homogeneous reactions. (a) What can be inferred by applying conservation of charge to an arbitrary control volume