tant or Last Name Almoroghi TA First Name khale r nrple 1 rink [C0(1,0%)- Step 3

Question

tant or Last Name Almoroghi TA First Name khale r nrple 1 rink [C0(1,0%)- Step 3 Color change (and observations) han wa odd concentrated soln tion, itt.. rnst4 Step 5 Color change (and observations). Step 6 Color change (and observations). one with waten it chang's it color pin thu one uith no watur it) change to ue the.one uith -atu»'s (Pl.nt) Step 7 Color change (and observations). Step 8 Color Change (and observations). Questions: 1. What was the effect of adding excess chloride ions. Use Le Chatlier's principle and provide evidence. 125

Explanation / Answer

first it is this equation [Co(H2O)6]2+ + 4 Cl - < -------->    [CoCl4]2-

The effect of add chloride ions to the solution is to shift the reaction to the right, toward the formation of the purple product. The system try to response to that addition of Cl- producing more [CoCl4]2-

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