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potassium chromate and silver nitrate

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Adding yellow potassium chromate to colorless silver nitrate produces a red-orange precipitate.

Solution A: 0.2 M potassium chromate (yellow)
Solution B: 0.1 M silver nitrate (colorless)
Precipitate: (red-orange)
2 AgNO₃(aq) + K₂CrO₄(aq) --> Ag₂CrO₄(s) + 2 KNO₃(aq)

(2)

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potassium chromate and lead(II) nitrate

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Adding yellow potassium chromate to colorless lead(II) nitrate produces a yellow precipitate.

Solution A: 0.2 M potassium chromate (yellow)
Solution B: 0.2 M lead(II) nitrate (colorless)
Precipitate: (yellow)
Pb(NO₃)₂(aq) + K₂CrO₄(aq) --> PbCrO₄(s) + 2 KNO₃(aq)

(2)

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potassium chromate and sodium nitrate

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Adding yellow potassium chromate to colorless sodium nitrate results in no reaction, no precipitate and a yellow solution.

Solution A: 0.2 M potassium chromate (yellow)
Solution B: 0.2 M sodium nitrate (colorless)
Precipitate: none. Resulting solution: (yellow)
NaNO₃(aq) + K₂CrO₄(aq) --> No Reaction

(2)

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