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A lab experiment investigating the properties of halogens, focusing on their behavior in water and hexane, interactions with halide ions, and the formation of silver halide salts. Students will examine the containers of the elements, observe the dissolution of sodium salts in water and hexane, and conduct reactions between halogens and halide ions. They will also test the solubility of silver halide salts and analyze an unknown halide.
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chloride ion and iodide ion has been converted to iodine. What do you think happened in the test tube with NaBr? b.) Into a 13 X 100 mm test tube add 10 drops of 0.2 M NaCl solution and 10 drops of hexane. In a second tube, add 10 drops of 0.2 M NaI and 10 drops of hexane. What is the color of the hexane layer? Now add 10 drops of bromine water (Br 2 ) to each of the test tubes. Stopper and shake the tubes for a few seconds, then allow to settle for about 1 minute. What is the color of the hexane layer? What is present in the hexane layer to give this color? If a reaction occurred, what would be the equation for the single displacement reaction? Did a reaction occur? c.) Into a 13 X 100 mm test tube add 10 drops of 0.2 M NaCl solution and 10 drops of hexane. In a second tube, add 10 drops of 0.2 M NaBr solution and 10 drops of hexane. What is the color of the hexane layer? Now add 20 drops of iodine water (I 2 ) to each test tube. Stopper, and shake each tube for a few seconds, then let settle for about one minute. Write the equation for the single displacement reaction that might occur. What is the color of the hexane layer? What is present in the hexane layer to give this color? Did a reaction occur?
Halogen Halide Ion I 2 Cl- Br- Iodine Water Color of hexane layer before addition of I 2 Write equation for possible reaction. Color of hexane layer after addition of I 2 Is there a reaction?