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    ES 10A Lab Act 3 Fuels and Combustion

    Uploaded by

    Queene Fayeth Taganas
    1) The document describes a lab activity on determining the molar heat of combustion of ethanol and propanol through simulating an experiment. 2) Students will watch a video of an experiment conducted in Australia to approximate the molar heat of combustion of ethanol. 3) They will then answer questions about possible sources of error in the experimental values, write the balanced combustion equations for ethanol and propanol, and calculate the molar heat of combustion of propanol using given experimental data.

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    ES 10A Lab Act 3 Fuels and Combustion

    Uploaded by

    Queene Fayeth Taganas
    229 views4 pages
    1) The document describes a lab activity on determining the molar heat of combustion of ethanol and propanol through simulating an experiment. 2) Students will watch a video of an experiment conducted in Australia to approximate the molar heat of combustion of ethanol. 3) They will then answer questions about possible sources of error in the experimental values, write the balanced combustion equations for ethanol and propanol, and calculate the molar heat of combustion of propanol using given experimental data.

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    ES-10A-Lab-Act-3-Fuels-and-Combustion

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    1) The document describes a lab activity on determining the molar heat of combustion of ethanol and propanol through simulating an experiment. 2) Students will watch a video of an experiment conducted in Australia to approximate the molar heat of combustion of ethanol. 3) They will then answer questions about possible sources of error in the experimental values, write the balanced combustion equations for ethanol and propanol, and calculate the molar heat of combustion of propanol using given experimental data.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    229 views4 pages

    ES 10A Lab Act 3 Fuels and Combustion

    Uploaded by

    Queene Fayeth Taganas
    1) The document describes a lab activity on determining the molar heat of combustion of ethanol and propanol through simulating an experiment. 2) Students will watch a video of an experiment conducted in Australia to approximate the molar heat of combustion of ethanol. 3) They will then answer questions about possible sources of error in the experimental values, write the balanced combustion equations for ethanol and propanol, and calculate the molar heat of combustion of propanol using given experimental data.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
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    The lab activity aims to simulate experiments to determine the molar heat of combustion of ethanol and propanol through calculation and comparison with theoretical values. Sources of error in the experimental method are also discussed.

    The objectives of the lab activity are to simulate experiments on determining the molar heat of combustion of ethanol and propanol, and to derive balanced chemical equations for their combustion reactions.

    Possible sources of error include heat lost to the environment, cross winds, water evaporation, uneven heating of water, imperfect energy transfer, and inaccuracy of the thermometer.

    ES 10A: Chemistry for Engineers LAB | Lab Activity 3 Page 1 of 2

    ES 10A
    FUELS AND COMBUSTION
    Lab Activity 3
    Molar Heat of Combustion of Certain Alcohols

    Objectives
    ⦁ To simulate an experiment on the determination of the molar heat of combustion of
    ethanol and propanol
    ⦁ To derive balanced chemical equations representing the combustion of ethanol and
    propanol

    Introduction
    Combustion reactions can be observed from biological processes inside the human body to
    industrial processes in different sectors of society. In the human body, the combustion of
    carbohydrates and fat happen on a daily basis. These substances may not be hydrocarbons, but
    they undergo a similar type of combustion reaction. For instance, the combustion of glucose ( )
    is shown below:

    For this lab activity, you will be observing a Chemistry professor in Australia as he conducts
    an experiment to approximate the molar heat of combustion of ethanol ( ).

    Instructions

    1. Watch the video on the link posted in the Google Classroom about the Molar Heat of
    Combustion of Ethanol.
    2. Answer the questions on the Data Sheet.

    Reference
    Col Harrison. (2017, November 17). Experiment 3 Molar heat of combustion of ethanol [Video].
    YouTube. https://www.youtube.com/watch?v=GOwoLI8fH20

    AY 2021-2022 1st Semester D. A. Agbayani, C. G. Racho


    ES 10A: Chemistry for Engineers LAB | Lab Activity 3 Page 2 of 2

    Name: CLATA, JOHN ROLDAN Date: SEPTEMBER 30,2021

    DELA CRUZ, PRINCESS JOANNA

    TAGLUCOP, CARL JAYSON

    TAGANAS, QUEENE FAYETH

    Section: BSME 1B Group #: 5

    ES 10A
    FUELS AND COMBUSTION
    Activity 3 Data Sheet
    Molar Heat of Combustion of Certain Alcohols

    Questions
    1. In your own words, what were the possible sources of error that resulted in a large
    difference in the experimental and theoretical values of the molar heat of combustion
    of ethanol?

    The following maybe the possible sources of error that resulted in a large
    difference in the experiment and theoretical values; Heat lost to the environment,
    cross of winds or simply the direction of the air, water evaporation, uneven heating
    of H2O, imperfect energy transfer, and inaccuracy of the thermometer.

    2. Write the balanced chemical equation for the combustion of ethanol.

    C2H5OH(l)+3O2(g)⟶2CO2(g)+3H2O(g)

    3. Assume another experiment was conducted using propanol with the following
    experimental results.

    Table 1. Data Gathered for the Combustion of Propanol


    Water

    V 100ml

    T initial 270C

    T final 670C

    Propanol

    mlamp,initial 100g

    mlamp.final 97.92g
    Calculate the molar heat of combustion of propanol using the same method in the
    video. Compare it with the theoretical value you can gather from a reliable source and
    calculate the % error.

    4. Write the balanced chemical equation for the combustion of propanol

    2C3H8O(l)+9O2(g)⟶6CO2(g)+8H2O(1)

    ` AY 2021-2022 1st Semester D. A. Agbayani, C. G. Racho

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