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Le Chatelier's Principle
Summary: An experiment related to Le Chatelier's Principle that tests two reactions, one caused by adding hydrochloric acid to a solution that produced a particular effect, and the other by adding sodium hydroxide to the solution to produce the opposite effect.
Le Chatelier's principle
Data Collection
2CrO42-(aq) + 2H+(aq) ↔ Cr2O72-(aq) + H2O Reaction 1
Br2(aq) + H2O ↔ Br-¬¬¬(aq)¬ + BrO-(aq) + 2H+(aq) Reaction 2
Co(H2O)42+(aq) + 4Cl-(aq) ↔ (CoCl4)2-(aq) Reaction 3
Reaction Observations
1 Initial color = yellow
I added 7 drops of HCl instead to make it orange. The color was not exactly orange but close.
Then, I added 6 drops of NaOH to make it go back to yellow and it worked.
- Initial color = yellowish-brown
- drops of 3M NaOH worked and made the solution colorless.
3 Initial color = pink
Adding HCl and NaCl(aq) to the solution also adds water.
6 drops of 0.1M Co(NO3)2 + 15 drops of concentrated HCl turned the solution to blue but not completely.
Then, 5 drops of 3M AgNO3 caused the reverse reaction by turning the solution to pink.
Evaluation...
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This section contains 919 words (approx. 4 pages at 300 words per page) |
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