1-Metathesis reactions are a family of reactions in which ions are removed from solution. Precipitation reactions are one type of metathesis reaction....

1-Metathesis reactions are a family of reactions in which ions are removed from solution.  Precipitation reactions are one type of metathesis reaction.  Describe what happens in a precipitation reaction:

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In our study of general chemistry during this course most of the reactions are carried out in an aqueous environment, meaning “in water”.  In this chapter we will look at the importance of water as a background and as a participant in chemical reactions.

When an ionic compound (salt) is dissolved in water it forms an electrolyte.  Describe an electrolyte solution, and why it conducts electricity:

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When ions do combine in an aqueous mixture to form a solid we write this as a net-ionic equation.

For example:    Ba+2(aq)   +    SO4-2(aq)  à   BaSO4(s)

Complete the following (watch charge balance in product!):

Mg2+(aq)   +    2 OH-(aq)  à    [_____________]

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The neutralization of a strong acid with a strong base is also a metathesis reaction.  Complete the following reaction.  Which ions are being removed from solution? (Pay attention to the phase or phase change!)

HCl (aq)   +    NaOH(aq)  à