ࡱ;   R F.aCompObj\WordDocument _ObjectPoolaa@ABCDEF FMicrosoft Word 6.0 DocumentNB6WWord.Document.6; h School 5 March - 8 March 2000II Lab: Replacement of the Halogens  Introduction The purpose of this lab is to examine the chemistry of the halogen family, in particular, the chemical activity of chlorine, bromine and iodine. The assessment of activity will be made through a series of single replacement reactions involving the free halogens and salts of the halogens. MATERIALS chlorine water 0.1 M NaCl bromine water 0.1 M NaBr iodine water 0.1 M NaI 9 test tubes hexane Procedure 1. In 3 small test tubes place equal amounts of water and hexane. Notice that the hexane remains in the top layer. Record the color of pure hexane. 2. Add a few drops of chlorine water to one test tube, cover and shake. Record the color of the chlorine in hexane. 3. To a second test tube add a few drops of bromine water, stopper and shake. Record the color of bromine in hexane. 4. To the third test tube add a few drops of iodine water, stopper and shake. Record the color of iodine in hexane. 5. Keep the above tubes for comparison. 6. Take a clean small test tube. Add a small amount of sodium iodide solution, then a litte hexane. Now add several drops of chlorine water and shake the test tube. There are two possible results: 1) the free chlorine is MORE active and will replace the iodine in NaI and set it free to find its way to the hexane (2NaI + Cl2 -> 2NaCl + I2) or 2) the chlorine is LESS active that iodine, no reaction will occur and the free halogen will find its way to the hexane layer. 7. PERFORM THE TEST DESCRIBED IN #6 FOR THE ALL THE COMBINATIONS OF SALTS AND FREE HALOGENS SHOWN IN DATA TABLE 2. 8. Remember that the less active halogen is always in the hexane layer. Data 1. TABLE 1 : COLOR OF FREE HALOGENS IN HEXANE HALOGENCOLOR IN HEXANECHLORINEBROMINEIODINE 2. TABLE 2 REACTION + HEXANECOLOR IF REACTIONCOLOR IF NO REACTIONCOLOR OBSERVEDREACTION? YES/NOMORE ACTIVE HALOGENNaI + Cl2NaBr + Cl2NaCl + Br2NaI + Br2NaBr + I2NaCl + I2 Analysis 1. For those reactions that occur, write and balance the complete equation. For those that do not occur, write NR. Write a conclusion. PERIODIC TABLE Name: _______________________ Partner #1: _______________________ Partner #2: _______________________ Acton-Boxborough Regional High School Due Date: ______________________ Acton-Boxborough Regional High School  |HH(EG(HH(d'`|HH(EG(HH(d'` |HH(EG(HH(d'`00&ta0`0(00&00&00&)(00&ࡱ Oh+'0SummaryInformation(?& , 8 DPX `l ࡱLScience F:Applications:Microsoft Office:Microsoft Word 6:Templates:chem labLAB: TITLE OF LABsciencescience'@DW@`@Ɠa@Microsoft Word 6.0.14; ܥhO e _4VVVVVn xV3V       &X~3 63  6 ALab: Replacement of the Halogens  Introduction The purpose of this lab is to examine the chemistry of the halogen family, in particular, the chemical activity of chlorine, bromine and iodine. The assessment of activity will be made through a series of single replacement reactions involving the free halogens and salts of the halogens. MATERIALS chlorine water 0.1 M NaCl bromine water 0.1 M NaBr iodine water 0.1 M NaI 9 test tubes hexane Procedure 1. In 3 small test tubes place equal amounts of water and hexane. Notice that the hexane remains in the top layer. Record the color of pure hexane. 2. Add a few drops of chlorine water to one test tube, cover and shake. Record the color of the chlorine in hexane. 3. To a second test tube add a few drops of bromine water, stopper and shake. Record the color of bromine in hexane. 4. To the third test tube add a few drops of iodine water, stopper and shake. Record the color of iodine in hexane. 5. Keep the above tubes for comparison. 6. Take a clean small test tube. Add a small amount of sodium iodide solution, then a litte hexane. Now add several drops of chlorine water and shake the test tube. There are two possible results: 1) the free chlorine is MORE active and will replace the iodine in NaI and set it free to find its way to the hexane (2NaI + Cl2 -> 2NaCl + I2) or 2) the chlorine is LESS active that iodine, no reaction will occur and the free halogen will find its way to the hexane layer. 7. PERFORM THE TEST DESCRIBED IN #6 FOR THE ALL THE COMBINATIONS OF SALTS AND FREE HALOGENS SHOWN IN DATA TABLE 2. 8. Remember that the less active halogen is always in the hexane layer. Data 1. TABLE 1 : COLOR OF FREE HALOGENS IN HEXANE HALOGENCOLOR IN HEXANECHLORINEBROMINEIODINE 2. TABLE 2 REACTION + HEXANECOLOR IF REACTIONCOLOR IF NO REACTIONCOLOR OBSERVEDREACTION? YES/NOMORE ACTIVE HALOGENNaI + Cl2NaBr + Cl2NaCl + Br2NaI + Br2NaBr + I2NaCl + I2 Analysis 1. For those reactions that occur, write and balance the complete equation. For those that do not occur, write NR. Write a conclusion. PERIODIC TABLE Name: _______________________ Partner #1: _______________________ Partner #2: _______________________ Acton-Boxborough Regional High School Due Date: ______________________ Acton-Boxborough Regional High School  |HH(EG(HH(d'`|HH(EG(HH(d'` |HH(EG(HH(d'`00&ta0`0(00&00&00&)(00&0  RNEASC Visiting Committee Work Schedule and Scheduled Meetings with Staff (4 of 7)dSecond Session (10:15 - 11 !"#$2?@RSlpK      A f -uU]cU]c]hU]]uD]a UZ]c( UZ]c(2!#12TU_`|hSK $$$,$,$$$$$$$$$$$$ $,$,$,$,$,$$$l H$h&         - ? T c t $$$$$$$$$$dddddddddddddddddl  H$l H$%            ddddddddddddddddddddddddddddddd$$$$$$$$,$,l  H$(   c d e f $$$$$T$T$ 0 !l h !s0h !shK@Normal]a "A@"Default Paragraph Font @ Header ! @ Footer !*O"* Chem HeaderL UZ]c    3     x-  !# =mAscience6Science F:Teacher Folders:Murphree:HALOGEN REPLACEMENT@ VMTimes New Roman Symbol MArial MTimesMNew Century Schlbk"1hj6eAF6!~KScience F:Applications:Microsoft Office:Microsoft Word 6:Templates:chem labLAB: TITLE OF LABsciencescienceࡱ;