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Missing question:
1) the rate of dissolving reaches zero 
2) the rate of crystallization reaches zero 
3) the rate of dissolving is zero and the rate of crystallization is greater than zero.
4) both the rate of dissolving and the rate of crystallization are equal and greater than zero.

Answer is: 4) both the rate of dissolving and the rate of crystallization are equal and greater than zero.
Silver chloride (AgCl) dissolves and form silver and chlorine ions, in the same time silver and chlorine ions crystallizate and form solid salt silver chloride.
In equilibrium rates of dissolvinf and crysallization and concentration of ions do not change.

In the given reaction equilibrium is reached in the system when the rate of dissolving and the rate of crystallization are equal and greater than zero.

What is equilibrium state?

Equilibrium state of any chemical reaction is that state in which rate of backward reaction is equal to the rate of forward reaction.

Given chemical reaction is:

AgI(s) ⇄ Ag⁺(aq) + I⁻(aq)

According to the given reaction:

  • AgI is dissolving to produce aqueous solution of silver and iodide ion.
  • In the forward direction dissolution of AgI takes place.
  • In the backward direction crystallization takes place.

So, at equilibrium rate of dissolving and the rate of crystallization are equal and greater than zero.

To know more about equilibrium state, visit the below link:

https://brainly.com/question/26597455

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