Freezing Point of Naphthalene I.         Purpose         To determine the freezing stoppage of a know substance, naphthalene II.         Materials         fence in brook                                 gas book of facts         quiz pipe                                 test tube clamps         thermometer                                 naphthalene         bunsen burner                                 gape         water                                         stopwatch III.         Procedure         1.         call the etna burner, attaching iodine end of the hose to the burner and the                 other to a gas source.         2.         Assemble the ring stand out so that a ring clamp is attached to the stand holding the                 test tube that will be utilise in the experiment.         3.         Fill the test tube to approximately 1/8 capacity with naphthalene crystals.         4.         turn out the thermometer in the crystals so that it is environ by the naphthalene                 powder yet not touching the sides or bottom of the test tube. go for a clamp to hold                 the thermometer in place.         5.         Ignite the Bunsen burner and using direct heat bunk the naphthalene powder until                 it wholly turns to a liquid. When the temperature reaches ! approximately 90o                 Celsius, stop heating.         6.         strike the change in temperature from 90o to 70o Celsius, recording the                 temperature at regular intervals, preferably 15 seconds. This data will be used to                 bring a graph later.         7.         Once the temperature has fallen to 70o, melt the naphthalene which is now                 rooted(p)         to remove the thermometer. right on dispose of the naphthalene liquid as                 instructed by the teacher.         IV.
        Data         reproval Elapsed                 Temperature of Naphthalene                 Time                 Temperature         Initial (0:00)                 100oC                                         7:00                 78.5oC         0:30                         97.5oC                                         7:15                 78.3oC         1:00                         93.0oC                          !                7:30                 78.3oC         1:30                         89.5oC                                         7:45 ... If you want to get a full essay, order it on our website: BestEssayCheap.com
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