Lab 6: Organic Compound Analysis Isabella O’Toole CHY 116 Friday 1:15-4:00 Lab Conducted on 4-12-13 and 4-19-13 4-26-13 This lab was conducted in order to determine the chemical composition of an unknown organic acid. A known mass of acid was dissolved into 30mL of either water or methanol (depending on solubility) and titrated with standardized sodium hydroxide. Data from this allowed the molar
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Separation of a Mixture of Solids Lab: Separation of a Mixture of Solids Experiment PURPOSE The purpose of this experiment was to learn how to separate a mixture of solids. DATA | | |Data Table 1: Experiment Data | | |Grams |Percent of mixture | |Iron filings |2.2
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One way is based on their pH. Substances may be * Acid 2. Base 3. Neutral INDICATORS This is a substance which is one color in and acid and another color in a base. Indicators can ten be used to test for the presence of acids or bases in a substance. Some are available in paper form (litmus) and others in liquid form (methyl orange). INDICATOR | COLOR IN ACID | COLOR IN BASE | LITMUS | RED
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LS Separation of Mixtures and Solids Purpose: To become familiar with the separation of mixtures of solids Hypothesis: I will be able to separate the materials using a variety of different methods. First‚ separate the iron fillings using a magnet. Second‚ I will put the rest of the solution into water and separate the insoluble sand from the soluble salt and benzoic acid. Third‚ I will filter out the benzoic acid when crystalized. Lastly‚ I will evaporate the water away leaving crystallized
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Lab 3 – Separation of a Mixture of Solids Cathy Lab Partners: Chelsea Brooke Sept 4‚ 2012 Chemistry 131A Dr. Vicki H Audia Pelab Questions: Proposed procedure for separation of a mixture: Use physical properties of the 4 substances to separate. 1. Remove iron with magnet 2. Add water to the mixture to melt the benzoic acid and NaCl then filter out sand. 3. Chill the solution and scoop the acid out leaving a salt solution. 4. Boil water away leaving salt. Purpose: The
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Experiment 1 Separation of Mixtures Summary of Principles: Most of the materials we encounter in everyday life are not pure substances. Many materials such as sand are formed from physical combination of various substances‚ and are called mixtures. Mixtures can be classified into homogeneous and heterogeneous. The purpose of this lab is to learn how to separate individual components from a mixture through decantation‚ filtration‚ distillation‚ and crystallization. Pre-Lab Questions: Attached
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discussing how many materials we use today are actually mixtures of pure substances. The separation of these materials into their pure substances can be quite challenging. When we are discussing separations of a mixture that contains pure substances‚ it all depends on whether you can separate the substances by physical means. That means‚ utilizing each substances physical properties such as boiling point‚ melting point‚ and magnetism. Separation of a Mixture of Solids Lab Report Assistant
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Theory: By Using specific methods of compounds detection‚ we can match an unknown compound with a known compound because similar compounds will display similar characteristics. In this experiment‚ identifications of the unknown ketone was accomplished using thin layer chromatography‚ melting point‚ and NMR spectrometry. Thin layer chromatography is very quick but sensitive way of determining the components of a mixture or a specific compound from a list of knowns. This method is the one
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Suggested time allotment: 5 to 6 hours MODULE 2 ACIDS AND BASES In Module 1‚ you identified common properties of solutions using different methods. You learned how to report the amount of the components in a given volume of solution. You also found out that not all solutions are liquid. Some of them are solids and others are gases. Towards the end of the module‚ you investigated the factors that affect how fast a solid dissolves in water. Most of the solutions you studied in Module 1
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2013 Separation of a Mixture of Solids Step 1: Separating out the Iron Mass of weighing dish: 0.7g Mass of weighing dish and mixture: 5.4g Net mass of the original mixture: 4.7g Mass of 10-cm square paper: 0.8g Mass of 10-cm square paper and iron fillings: 2.0g Net mass of iron filings: 1.2g Step 2: Separating out the Sand Mass of weighing dish: 0.7g Mass of weighing dish and dry sand: 1.7g Net mass of the dry sand: 1.0g Step 3: Separating out the Benzoic acid Mass
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