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When 15.0 mL of a 7.02×10-4 M ammonium fluoride solution is combined with 22.0 mL of...

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

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Expert Solution

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.

queen_honey_blossom answered 8 months ago
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