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Boyle Charles Calculator

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    Description

    Boyle Charles Calculator is a calculation sheet that solves a gas problem of volume, pressure, and temperature. This Boyle Charles Calculator is a subset of iPad Mol Calculator software.

    A typical problem is as follows.

    (Example)
    There is 0.05 mol of hydrogen gas.
    (1)When the temperature is 20 ℃ and the pressure is 1 atmosphere, how much liters is the gas ?
    (2)When the temperature is 20 ℃ and the gas is packed in a 0.1-liter container, how much is the pressure of hydrogen gas?

    (1)Volume calculation

    Boyle Charles Calculator solves the problem in the following three steps.

    //Step 0: Preparation//
    Gather known data.

    //Step 1: Definition//
    Enter known data into the BC sheet.
    Mol = 0.05, T = 20[C], p = 1[atm]

    //Step 2: Calculation//
    Data are not independent but mutually related by formulae.
    Calculation is a conversion from unknown data to known data using the formulae.
    The formulae are embedded in P and G buttons.
    Touching out those buttons executes the formulae and changes unknown data to known data.
    Touch out buttons as follows.
    Touch out P_Mol button. StdVol and Vol data are changed to known data.
    It turns out that the volume of hydrogen gas is 1.2 L.

    (1)Pressure calculation

    //Solution by V1.00//
    Use the above results.
    Enter the following data
    Vol = 0.1[L]
    Touch out G_Pres button. Pressure data are changed to known data.
    It turns out that the gas pressure is 12.02 atmospheres.

    //Solution by V2.00//
    Change PresVol mode to pressure mode.
    //Step 1: Definition//
    Enter the following data.
    Mol = 0.05, T = 20[C], Vol = 0.1[L]

    //Step 2: Calculation//
    Touch out P_Mol button. StdVol and Pres data are changed to known data.
    It turns out that the gas pressure is 12.02 atmospheres.

    [Data label]
    n [mol]: Mol quantity of substance.
    StdVol [L]: Gas volume of substance at 0 deg C and 1 atm.
    T [C][F]: Temperature.
    p [atm][kPa][mmHg]: Pressure
    Vol [L]: Gas volume of substance at the temperature T and at the pressure p.

    [Buttons and data]
    //P button and P data group//
    P (put) button inputs data to which the P button is assigned.
    P data group is a group of data to which the P buttons are assigned. The P data group has a special character. When one P data is input, all other data of the P data group are updated by formulae.

    //G button//
    G (get) button gets data from other data using formulae.

    //C butto//
    C (Clear) button clears all data.

    //PresVol button//
    Either pressure data or volume data belongs to P button data group.
    The PresVol button specifies pressure mode or volume mode.

    [Color change]
    Color change shows what data are input, output, or referenced data in this button execution.
    Input data:Blue color
    Referenced data:Yellow color
    Output data:Green color
    Uncalculated data:Red color

    [Formulae]
    Embedded formulae are as follows.
    StdVol = 22.414 x n
    StdVol /273.15 = p x Vol / (T + 273.15)