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Is this redox reaction balanced?

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  • Can the same reaction be both a precipitation reaction and an acid‐base reaction? Can we have a reaction that’s both a redox and a precipitation reaction? What about a metathesis that’s a precipitation reaction? How do these physical changes (formation of a precipitate, bubbles of a gas) let us know that a chemical change has occurred?

  • Answer:

    Can the same reaction be both a precipitation reaction and an acid‐base reaction? Yes. For example, Ba(OH)2 + H2SO4 = BaSO4(s) + 2H2O Can we have a reaction that’s both a redox and a precipitation reaction? Yes. For example, Cu(2+) + 2Co(3+) --> Cu (s) + 2Co(2+) What about a metathesis that’s a precipitation reaction? Yes, such as condensation polymerization. How do these physical changes (formation of a precipitate, bubbles of a gas) let us know that a chemical change has occurred? Well, when one aqueous solution is added to another aqueous solution, there is originally no precipitate or bubbles of a gas, thus the formation of precipitate or bubbles of a gas must indicate a chemical reaction.

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Can the same reaction be both a precipitation reaction and an acid‐base reaction? Yes. For example, Ba(OH)2 + H2SO4 = BaSO4(s) + 2H2O Can we have a reaction that’s both a redox and a precipitation reaction? Yes. For example, Cu(2+) + 2Co(3+) --> Cu (s) + 2Co(2+) What about a metathesis that’s a precipitation reaction? Yes, such as condensation polymerization. How do these physical changes (formation of a precipitate, bubbles of a gas) let us know that a chemical change has occurred? Well, when one aqueous solution is added to another aqueous solution, there is originally no precipitate or bubbles of a gas, thus the formation of precipitate or bubbles of a gas must indicate a chemical reaction.

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