Lab Report

1044 WordsMar 26, 20155 Pages
Christine Nguyen Professor Sudha Madhugiri CHEM 1411-S4L 05 February 2015 Experiment 1: Extraction of Salt from Mixture Introduction: The initiation of the experiment was to separate a mixture of sand and salt. Through using given materials, and following the procedure, the objective was met. The mixture can be separated into sand and salt through filtration and evaporation. The sand can be separated from the mixture through filtration. In order to filter the sand from the mixture, salt must first be dissolved in water. The mixture of salt water and sand can be then filtered through a Buchner Funnel fitted with filter paper. Filter paper only allows liquids though, allowing for the sand to stay inside it. The salt can be separated from water through evaporation. During evaporation the solvent evaporates, leaving solid particles behind. Objective: The aim of this experiment is to completely separate each substance in the mixture. The group predicted that the majority of the salt will be collected, but not all, and that most of the sand will be left as residue when filtered. This will leave the salt-water solution as the filtrate, and separate from the sand and which was present in the original mixture. Therefore, these processes will not be entirely accurate, but will separate most of the substances from the mixture. Qualitative Observations: * Upon boiling the salt water, small pieces of salt were popping out of the flask * Not all grains of the sand were collected from the Buchner Funnel * During the filtration process, some sand got into the filtration Buchner Funnel and maybe some salt was lost. Data Table: Mass of dry sand and salt mixture (g) | 10.3214 | Mass of plastic weigh boat (g) | 2.2310 | Mass of dry filter paper (g) | 0.3114 | Mass of evaporating dish (g) | 77.0807 | Mass of dry sand and filter paper (g) | 8.450 |

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