Fluoride ion selective electrodes use membranes made of lanthanum fluoride, LaF3. Write the chemical equation for the solubility equilibrium of LaF3 only dissociating one F- . Include the physical states of the species. This equilibrium represents what occurs at the membrane surface. LaF3(s) and LaF2 (s) represents the electrode and F-(aq) represents the analyte in solution.

convalent bond :

is a chemical bond formed by the sharing of electron between 2 atoms.

it is the direct chemical bond between 2 atoms.

in bond formation atoms are involved here.

electrovalent bond:

is a chemical bond defined as electroststic attraction between 2 atoms.

it is the electrostatic attraction between 2 atoms.

in bond formation, ions are involved here.

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pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation: