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Q: Why did the addition of potassium thiocyanate cause the equilibrium to shift the way it did which ion causedthis shift?
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Why potassium thiocyanate is added in the titration of sodium thiosulphate with copper?

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.


What is effective action?

The mass action effect is the shift in the position of equilibrium through the addition or removal of a participant in the equilibrium.


Why is KSCN used in iodometry of copper?

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.


Is Surface tension of water affected by potassium permanganate?

Yes. Surface tension of water increases with addition of potassium permanganate.


How does a system at equilibrium respond to the addition of more product?

Product added to a system at equilibrium will result in the reaction moving left, or using up product to make more reactants until it reaches equilibrium again.


How can the force table be used to demonstrate the addition of vectors using the principle of equilibrium?

:)))) Study!


Does taking water out of an equilibrium reaction change the equilibrium constant?

No, the equilibrium constant is independent of concentration as long as the ratio of products and reactants remains as is. It can be effected by anything that would influence the ratio of products and reactants, such as changes in temperature or the addition of a catalysis.


How does the addition of epinephrine affect the concentration of sodium and potassium in the muscles cytoplasm?

i have now idea


What effect does the addition of NaOH have on the concentration of H?

say for example the equilibrium I2(aq)+H2O(l)-----HOI(aq)+I(aq)+H(aq) Think Lechatlier principle... addition of NaOH will cause the H ions to react with the OH ions to cause more water (more reactants) increase in reactants shifts the equilibrium in the FORWARD direction to form MORE H+ to restore the equilibrium


Does magnesium and potassium hydroxide cause a reaction?

With the addition of certain catalysts and heat, yes. Be careful.


What would cause addition of KCN to water?

Since potassium cyanide (KCN) is highly poisonous, the addition of KCN to water might be caused by an intention to kill.


What makes iodine soluble in water?

You can make iodine soluble in water by addition of potassium iodide KI