Question
Limiting Reactant and Excess Reactant:
I’m stuck on this question
3. Did the test solution react with the supernatant from the test tube that had the largest amount of precipitate? What can you infer about the molar ratio of this reaction?
This is the data I have:
What happened when you added test solution to the test tube filled with only copper sulfate solution? The copper hydroxide forms as a blue precipitate
What happened when you added test solution to the test tube filled with only sodium sulfide? The silver nitrate forms as a white precipitate
Copper (II) sulfate to Sodium Sulfate
Color of Supernatant and Test solution
Reagent in Excess
Mass test tube plus precipitate (g)
5 mL CuSO4: 1 mL Na2S
blue
copper sulfate
27.410
4 mL CuSO4: 2 mL Na2S
blue
copper sulfate
27.419
3 mL CuSO4: 3 mL Na2S
white
sodium sulfide
27.429
2 mL CuSO4: 4 mL Na2S
white
sodium sulfide
27.419
1 mL CuSO4: 5 mL Na2S
white
sodium sulfide
27.410
Which test tube had the largest amount of precipitate? Record the ratio of CuSO4 to Na2S used. What is indicated by the maximum amount of precipitate? The largest amount of precipitate was trial #3 weighing .019g at a 1:1 reatio. The test tube contains equal amounts of both reactants so they will be completely consumed to produce the largest amount of precipitate.
If anyone knows how to answer the last question I would really appreciate it (best answer and 5 stars)
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