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.