Question

In your own words, explain how Transition lenses are an example of Le Chatelier's principle. In your answer, address: a. What is being added or removed? b. Is it a product or reactant in the chemical reaction? How does this relate to Le Chatelier's principle? c. How does this effect the color of the lenses?

Answer 1

This can be relate to Le-chatell's principal that Agcl tenergy & Agt + El- (clear) (dark) Based on the disturbance of the energy. the equilibrium Shift towards. Ah and become the lens dark and in th alsmce of energy the equilihium tends to left and lenses become lightens. C. The effect of colon is the lencer change their clear stage to the darker stage and when the intensity of light will be more and tend back to the original or dear Shuge when the intensity of light become lessen

Solution : a) According to Le chatelier's pinopal when a system experience a disturbance such as conontration, tempore or pressure changes, the system will respond and to restore a new equilibrium State In the case of transition lenses the lence are made up of substances such as silver chloride. In the absence of uv light the systems or the molecules are transparent to visible light. But when we exposed to or light the molecule undergo some changes that to gone to Chemical process and the molecules change the shape. The new molecular structure absorbs the visible light and the lenses thus got darken. The transition lense respond according to the change in temperature and Cherviced reaction takes plau. awrding to those reacties the lenses are become transpound and darkor. That is when we go outside the intensity of light is more and the glass darkens and then we go back insch the intensity become less the glass became lightens that is become clear. 6) Here the the orcidation and reduction chernical geaction is taking place. Silver chloride (Agc1) and Cact (coppor chlovice) are added in the manufacturing process of the glass. and is uniformely distributed The Ages is oridaise and reduced by light on Onication reduction cr cite and Agt te - Ag

The clovide tons oxidised to produce atoms and an election and the election is transfer to silver ion to produce silver atoms and the cluster of atoms block the tansmittence of light and thus the lens become daskon. and this is a reversible reaction and allows the lens become transparent again. Eltcut - Ca ²+ + çi and then react with Silver atoms Chh + Ag at + Agt and this effect the lensee become hausganat again due to this Ag and I atoms are become original oridaised and reduet stales.