Summary of Reactions and Equations

Solutions of two compounds, each with positive and negative ions (AX + BY) 

Two new compounds (AY + BX), which may be a solid, water, an acid, or an aqueous ionic compound 

All of the information from the equation-writing summaries at the ends of Sections 8.6 to 8.9 has been assembled into Table 8.3. The reactants (first column) are shown for each reaction type (second column). Each reaction type has a certain equation type (third column) that yields predictable products (fourth column). 

We indicated earlier that just because an equation can be written, it does not necessarily mean that the reaction will happen. By using the results of experiments performed over many years, we can make reliable predictions. For example, we can predict with confidence that zinc will replace copper in a copper sulfate solution but that silver will not, or that pouring calcium nitrate solution into sodium fluoride solution will yield a precipitate, but that pouring it into sodium bromide solution will not. We have deliberately refrained from making these predictions in this chapter learning to write equations is enough for now. 

Any combination of elements and compounds that form one product 

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