Determining the Molar Mass of a Volatile Liquid Purpose: The purpose of this lab was to find the molar mass of a volatile liquid. Data Table: Mass of Test Tube and Stopper (g) | 10.864 g | Barometric Pressure (mmHg) | 749.31 mmHg | Temperature of Boiling Water (C) | 97.1 C | Mass of Test Tube‚ Stopper‚ and Condensed Liquid (g) | 10.890 g | Volume of Flask (mL) | 9.90 mL | Calculations: 749.31 mmHG*1 atm760 mmHg= .98593 atm 9.90 mL*1 L1000 mL= .00990 L 97.1 C+273=370.1 K Substituting
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The Molar Mass of a Volatile Liquid Adam Kozdrowicz Adam Li 11/05/12 Mr. McCready Purpose: The purpose of this procedure is to determine the molar mass of an unknown liquid‚ evaporate a sample of a liquid substance‚ and measure certain physical properties of the substance as it condenses. Procedure: 1. Obtain safety goggles. 2. Trim a piece of aluminum foil so that it covers the top of a small 13 x 100 mm test tube. Secure the foil with electrical tape. Make sure
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Determining the Molar Mass of an Unidentified Volatile Liquid Abstract Molar mass helps to determine how much of a substance is present in a sample. Volatile liquids change from liquid to gas at relatively low temperatures and atmospheric pressures. In this investigation an unknown volatile liquid is vaporized so that the ideal gas law can be used to determine its molar mass. This study will apply the ideal gas law in tandem with the concept of volatile liquids and basic molar mass related stoichiometry
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Analysis of a Volatile Liquid Abstract: The purpose of this experiment was to use various methods of analysis to determine the identity of an unknown volatile liquid. In the first part of the experiment‚ the molecular mass was found by using water to find the volume of a flask through calculations and this as well as the mass of the gas of the unknown liquid were put into the a manipulated version of the ideal gas equation to determine the molar mass of the liquid‚ which was 14.21g per
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Lab 4 - Molar Mass of a Volatile Liquid Purpose: To determine the molar mass of an unknown liquid whose boiling point is between room temperature and the boiling point for water. Key Terms: List and define any additional new terms relevant to this experiment. volatile – intermolecular forces - Key Formulas: Write the following formulas. Ideal Gas Law Molar Mass Relationships: The Dumas Method - In 1826 Jean-Baptist Dumas developed a method for determining
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principle of each if the following methods of separation of mixtures. [2] (i) Centrifugation method (ii) Separation using separating funnel. 24. (a) Differentiate between Mass and Weight [Four points]. [2] (b) Show that weight of an object on moon is equal to of the weight if the object on the earth. Given Mass of Earth ‚ Mass of moon ‚ radius of earth ‚ radius of moon = [3] OR (a) Will a sheet of paper fall slower than one that is crumpled into a ball in
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What is molar mass?Molar mass is the weight of one mole (or 6.02 x 1023 molecules) of any chemical compounds. Molar masses of common chemical compounds that you might find in the chemistry laboratory can range between 18 grams/mole for compounds like water to hundreds of grams per mole for more complex chemical compounds.The lightest possible chemical that one can have under normal conditions is hydrogen gas‚ or H2. There is no limit to how heavy a chemical compound can be - it is not uncommon for macromolecules (large
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Molar Mass of a Volatile Liquid There are several ways to find the molar mass of a substance. One way‚ if the substance is a gas‚ is to use the Ideal Gas Equation to find molar mass. The standard equation reads PV=nRT where “n” is the number of moles present‚ “P” is the pressure (which is obtained by reading the barometric pressure of the room with the class barometer)‚ “V” is the volume of the gas‚ “R” is the universal constant‚ and “T” is the temperature of the gas. The experiment’s objective
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Determination of the molar mass of carbon dioxide Purpose: The purpose of the practical that we completed was to determine the molar mass of carbon dioxide (CO2) by experimental means and to observe the reaction of hydrochloric acid and sodium carbonate. Using the balanced equation: Na2CO3 + 2HCl → 2NaCl + H2O + CO2 Materials / Apparatus: 1) 8.00g of sodium carbonate‚ 2) 30mL of hydrochloric acid (6molL-1) 3) 100mL of hydrochloric acid (6molL-1) 4) 100mL conical flask‚ 5) 150mL glass beaker 6)
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December 12‚ 2014 Determination of the Molar Mass of Volatile Liquids Theory: Molar masses‚ can be seen and used daily in chemistry. In this lab‚ the ideal gas law helps determine and evaluate the molar mass of gases and volatile liquids. The ideal gas law compares four properties of a gas which include pressure‚ volume‚ moles‚ and temperature. During this experiment‚ the moles would be unknown‚ in effect the student must use a substance mass divided by its molar mass. With this‚ the ideal gas law can
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