Question

The addition of which substance will decrease the solubility of AgNO3 in water?

1)0.1 M potassium chloride
2)0.1 M barium chloride
3)0.1 M sodium nitrate
4)0.1 M sodium carbonate

Answer 1

3 is correct because the .1 moles of the NO3 will be better option to decrease the solubility of the Silver Nitrate.

Answer 2

Answer: The correct answer is Option 3.

Step-by-step explanation:

Common ion effect is defined as the effect which occurs on equilibrium when a common ion (an ion which is already present in the solution) is added to a solution. This effect decreases the solubility of a solute.

In silver nitrate, the ions present in the solution are:
`Ag^+\text{ and }NO_3^-`

For the given options:

Option 1: 0.1 M potassium chloride

The ions formed by the ionization of this solution are
`K^+\text{ and }Cl^-`. As, no common ions are present. So, addition of this substance will not decrease the solubility of silver nitrate solution.

Option 2: 0.1 M barium chloride

The ions formed by the ionization of this solution are
`Ba^(2+)\text{ and }Cl^-`. As, no common ions are present. So, addition of this substance will not decrease the solubility of silver nitrate solution.

Option 3: 0.1 M sodium nitrate

The ions formed by the ionization of this solution are
`Na^+\text{ and }NO_3^-`. As, nitrate ions are present which is a common ion. So, addition of this substance will decrease the solubility of silver nitrate solution.

Option 4: 0.1 M sodium carbonate

The ions formed by the ionization of this solution are
`Na^+\text{ and }CO_3^(2-)`. As, no common ions are present. So, addition of this substance will not decrease the solubility of silver nitrate solution.

Hence, the correct answer is Option 3.