Calorimeter

Abstract The goal of this experiment is to understand the theory behind bomb calorimetry and use it to determine the enthalpy of combustion of naphthalene. First, the bomb calorimeter was standardized using benzoic acid and the average heat capacity of the bomb calorimeter was calculated to be 10.60.3205 kJ/K. From that, the average m, and f were found to be -526615.66kJ/mol, with a percent difference of 3.31%, -52600.0015kJ/mol with a percent difference of 1.99%, and -185.50.0013kJ/mol with a…

graph and a set of sample calculations are included which will show how the values for the enthalpy of combustion of the fuel sources are deduced. Graph 1: Scatter plot showing the change in the temperature of 80.0mL of distilled water in the tin calorimeter during and after the combustion of the kerosene for the first conducted trial. The linear trendline was created for the last three data points, where the water was allowed to cool, which was then extrapolated backwards to account for the…

than it releases in the reaction. Exothermic: a type of reaction that has energy coming out of the reaction, therefore more energy is released than used in the reaction. Propanol: a transparent/colorless liquid used as a solvent and antiseptic. Calorimeter: an apparatus for measuring the amount of heat involved in a chemical reaction or other processes. Research Question: How much heat/energy is produced during the combustion of propanol? Variables Independent variable What: Amount of alcohol…

from the workstation and read the directions for the experiments thoroughly. Part 1: Warm slightly more than 300 mL of water to approximately 70 degrees Celsius. Measure out 150 mL of water into the coffee cup calorimeter. Take the temperature of this water in the coffee cup calorimeter once it has reached a steady temperature. Then, add an ice cube approximately the size of a large marshmallow. Stir the ice and water and measure the lowest temperature of the liquid once the ice has completely…

distribution would be caused by insufficient stirring or excessive stirring. If the solution in the calorimeter was not mixed enough it would cause areas or warmer and cooler solution. Also if the solution was mixed intensely it may add to an increase of kinetic energy in the solution increasing the heat recorded. The heat from the system may have transferred to our hands as we held the top of the calorimeter down. This would cool down the system decreasing the final temperature recorded. The…

minutes to allow it to reach the temperature of the water (100.0 °C) Place one Styrofoam cup into the other. This will be your calorimeter. Measure the mass of the calorimeter. Fill about ¾ full with room temperature water, then measure the mass again, determining the mass of the water by the difference. Place the calibrated thermometer in the water in the calorimeter for three minutes, then measure the temperature of the water. Use the calibration…

The concept of energy is very important to know because it is used in everyday life. Energy is used when getting out of bed just to dread going to school, heating up left overs, and even boiling some water. Energy cannot be destroyed or created, only passed from one object to another. A great example of energy is the transfer of heat. An ice cube sitting in the hand of a person can show energy at work. Heat from the hand causes the cube to melt and change forms into liquids. To understand energy…

released is usually heat, keeping track of the heat flow in reactions will help determine the change in enthalpy of a reaction. Observing the measurement of heat changes is known as calorimetry; hence, in this lab a calorimeter was used to measure the changes in enthalpy. A calorimeter is well-designed when it is well insulated from the environment so there could be minimal to no heat change between the system and…

determined. The water equivalent of the calorimeter was determined using distilled water. Cool water was placed into the calorimeter and its temperature recorded, while an equal weight of water was heated to 35.3 ⁰C. The heated water was immediately poured into the water in the calorimeter and the temperature was recorded. The water equivalent of the calorimeter could then be calculated. Approximately 100 g of cool distilled water was placed into the calorimeter and the initial temperature…

electromagnetic calorimeter: This is designed to measure the energy of particles which interact via elctromagnetic interactions. To achieve good calorimeter performance the central solenoid and LAr emc is placed in a common vacuum vessel. It consists of two parts: barrel and two end caps placed in cryostat. The barrel consists of two identical half-barrels, seperated by a small gap (4 mm) at interation point. End-caps are further divided into two coaxial wheels: inner and outer. This…