In: Chemistry
When 15.0 mL of a 7.02×10-4 M ammonium fluoride solution is combined with 22.0 mL of a 9.63×10-4 M magnesium sulfate solution does a precipitate form? (yes or no) For these conditions the Reaction Quotient, Q, is equal to
Precipitation:
The precipitation in a reaction happens to occur only when the ionic product’s value is more than the . If substance’s ionic product and are equal then saturation takes place and reaction attains equilibrium.
__Given Data:__
*The volume of is 15 mL
*The concentration of is
*The volume of is 22 mL
*The concentration of is
The reaction between and has been shown below
The total volume existing in the solution after mixing is
The equation written below is used in finding the concentration for the solution.
Substitute the respective values in the above equation to get the concentration values for and
For
the calculation for finding the concentration is shown below
For
the calculation for finding the concentration is shown below
The concentration of is equal to the concentration of which is
The concentration of is equal to the concentration of which is
The reaction for dissolution of is shown below
The ionic product for the reaction
above can be calculated by the following manner.
The value for is
Precipitate forms in a reaction on a condition that the value of Q should be more than the substance’s value.
Since the value of Q tends to be less than the value of , no precipitation would occur in the reaction.