7.2 Evidence of a Chemical Reaction
7.2 Evidence of a Chemical Reaction
7.2 Evidence of a Chemical Reaction
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7.6 Precipitation <strong>Reaction</strong>s: <strong>Reaction</strong>s in<br />
Aqueous Solution That Form a Solid<br />
• Sodium carbonate in laundry detergent reacts<br />
with dissolved Mg 2+ and Ca 2+ ions to form solids<br />
that precipitate from solution.<br />
• These reactions are examples <strong>of</strong> precipitation<br />
reactions, reactions that form a solid (s), called a<br />
precipitate, upon mixing two aqueous solutions.
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