Thermodynamics of the Dissolution of Borax

PRINTED NAME: __JEHANNE BELANGE__ TA’S NAME: __JEAN SMITH__

LAB PARTNER’S NAME: __AZAM QURESHI__

I have completed this homework independently, in accordance with all the provisions of the ethics statement inside the front cover of the lab manual. I have not looked at completed work from other students from this year or from previous years.

Signature:___________________________ Date:___________

Experiment 1 Determination of Thermodynamic Parameters From Measurements Related To The Solubility of Borax

Purpose

The purpose of this experiment is to determine the thermodynamic quantities of the dissolution of borax by measuring the solubility product over the temperature range of 5°-55° C.

Data

|Assigned Temperature |20°C |

|Amount of borax obtained |5.0417 g |

Temperature before adding 5.00 ml to trial beakers

|Trial Beaker 1 |19.2° C |

|Trial Beaker 2 |19.0° C |

|Trial Beaker 3 |19.6° C |

|Trial Beaker 4 |19.1° C |

|Trial Beaker 5 |19.2° C |

Titration of borax solution

|Trial |Starting point on burette |Ending point on burette |Amount of HCl used to reach endpoint |

|1 |4.25 ml |9.65 ml |5.40 ml |

|2 |9.65 ml |15.10 ml |5.45 ml |

|3 |15.10 ml |20.45 ml |5.35 ml |

|4 |20.45 ml |25.75 ml |5.30 ml |

|5 |25.75 ml |31.05 ml |5.30 ml |

Data From Blackboard

|Temp...