Indicator is added to zinc because firstly it combines with zinc and forms zinc-indicator complex and after addition of more EDTA to the complex , the zinc which was in the form of complex gave free indicator and forms Zn-EDTA complex and the free indicator gaves blue colour which indicates end point of titration.
On addition of the KI to your copper (II) solution, you formed Copper (I) iodine solid and produced the tri-iodide ion. It is the tri-iodide ion that you are titrating with the sodium thiosulfate. The tri-iodine ion is what itercalates into the starch molecules to form the dark blue color you are using as an end point in the titration. Some the the tri-iodide ion formed will adsorb to the surface of the solid copper (I) iodine formed. This must be desorbed for a complete titration. The addition of the potassium thiocyanate, displaces the adsorbed tri-iodine ion, and liberates it for titration.
When a solid solute drink mix is added to any solution, the concentration changes to a higher magnitude.
Solute
heat
POSSIBLE ACTIONS:- the solid is dissolved or- the solid is insoluble or- the solid react with the solution
On addition of the KI to your copper (II) solution, you formed Copper (I) iodine solid and produced the tri-iodide ion. It is the tri-iodide ion that you are titrating with the sodium thiosulfate. The tri-iodine ion is what itercalates into the starch molecules to form the dark blue color you are using as an end point in the titration. Some the the tri-iodide ion formed will adsorb to the surface of the solid copper (I) iodine formed. This must be desorbed for a complete titration. The addition of the potassium thiocyanate, displaces the adsorbed tri-iodine ion, and liberates it for titration.
Solid-ity. Solid-arity.
On addition of the KI to your copper (II) solution, you formed Copper (I) iodine solid and produced the tri-iodide ion. It is the tri-iodide ion that you are titrating with the sodium thiosulfate. The tri-iodine ion is what itercalates into the starch molecules to form the dark blue color you are using as an end point in the titration. Some the the tri-iodide ion formed will adsorb to the surface of the solid copper (I) iodine formed. This must be desorbed for a complete titration. The addition of the potassium thiocyanate, displaces the adsorbed tri-iodine ion, and liberates it for titration.
It depends on the solid!
solid is it?
Heat is added to a solid to make a liquid... this is called melting. some additional liquid (water,ethanol,acid…) also change solid into a liquid.
Of course heat is added because you are turning solid which is like ice to gas which is water vapour !!
When solid cesium oxide is added to water, you get this equation:Cs2O (s) + H2O (l) --> 2 CsOH (aq)
its a possibility, but i wouldn't dwell too much on it, there needs to be some more solid indicators of an attraction
When a solid solute drink mix is added to any solution, the concentration changes to a higher magnitude.
titration is the best method to determine the unknown concentration of the unknown. if ur known is a solid then you would have to used distilled water to ensure it is submerged before you titrate.
LIQUID