Predicting Products Practice

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calcium acetate + sodium carbonate —>

calcium carbonate + sodium acetate

If two ionic compounds are combined...

...then a double displacement reaction will probably occur.

____ NaI + ____ CaSO4 -->

____ NaI + ____ CaSO4 --> (no reaction!)

____ Ca(OH)2 + ____ HF -->

1 Ca(OH)2 + 2 HF --> 2 H2O + CaF2

____ HBr + ____ Fe -->

2 HBr + 1 Fe --> 1 H2 + 1 FeBr2 or 6 HBr + 2 Fe --> 3 H2 + 2 FeBr3

____ Ag2SO4 + ____ NaNO3 --> (What kind of reaction?)

____ Ag2SO4 + ____ NaNO3 --> (no reaction!)

If two elements or very simple molecules combine...

....then it will probably be a synthesis reaction (hint: octet rule)

____ CaCO3 --> (What kind of reaction?)

1 CaCO3 --> 1 CaO + 1 CO2 (Decomposition)

____ Na + ____ CaSO4 -->

2 Na + 1 CaSO4 --> 1 Na2SO4 + 1 Ca (single displacement reaction)

If a pure element reacts with another compound...

...then it is probably a single displacement reaction.

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