Question

The Ksp for AgBr is 4.9 X 10^-13 at 25 C. What is the concentration of Ag+ in a solution in which the concentration of Br- is 0.010M?

Answer 1

Answer: The concentration of
`Ag^+` ion in the solution is
`4.9* 10^(-11)M`

Step-by-step explanation:

The balanced equilibrium reaction for the ionization of calcium fluoride follows:

`AgBr\rightleftharpoons Ag^(+)+Br^-`

s 0.01

The expression for solubility constant for this reaction will be:

`K_(sp)=[Ag^(+)][Br^-]`

We are given:

`K_(sp)=4.9* 10^(-13)`

`[Br^-]=0.01M`

Putting values in above equation, we get:

`4.9* 10^(-13)=(s)* 0.01`

`[Ag^+]=4.9* 10^(-11)M`

Hence, the concentration of
`Ag^+` ion in the solution is
`4.9* 10^(-11)M`