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Graphics

Example 4.

Plots of the apparent equilibrium constant [Graphics:../Images/index_gr_225.gif] as a function of temperature T, pH, pMg, and ionic strength I can be obtained by using the function graphic2D[]. All of the parameters needed by graphic2D[] have already been defined and specified with the following exceptions.

[Graphics:../Images/index_gr_226.gif] [Graphics:../Images/index_gr_227.gif]
[Graphics:../Images/index_gr_228.gif] [Graphics:../Images/index_gr_229.gif]
[Graphics:../Images/index_gr_230.gif] [Graphics:../Images/index_gr_231.gif]

[Graphics:../Images/index_gr_232.gif]

[Graphics:../Images/index_gr_233.gif]

[Graphics:../Images/index_gr_234.gif]

[Graphics:../Images/index_gr_235.gif]

[Graphics:../Images/index_gr_236.gif]

[Graphics:../Images/index_gr_237.gif]

[Graphics:../Images/index_gr_238.gif]

[Graphics:../Images/index_gr_239.gif]

The function graphic3D[] can be used to produce three-dimensional plots of the apparent equilibrium constant [Graphics:../Images/index_gr_240.gif] as a function of any two of the following independent variables: temperature T, pH, pMg, and ionic strength I. The use of this function is essentially the same as that of graphic2D[] except that one must specify the following parameters.

[Graphics:../Images/index_gr_241.gif] [Graphics:../Images/index_gr_242.gif]
[Graphics:../Images/index_gr_243.gif] [Graphics:../Images/index_gr_244.gif]
[Graphics:../Images/index_gr_245.gif] [Graphics:../Images/index_gr_246.gif]
[Graphics:../Images/index_gr_247.gif] [Graphics:../Images/index_gr_248.gif]
[Graphics:../Images/index_gr_249.gif] [Graphics:../Images/index_gr_250.gif]
[Graphics:../Images/index_gr_251.gif] [Graphics:../Images/index_gr_252.gif]

Note that if the surfaces are not smooth enough, the value(s) of npts1 and/or npts2 should be increased.

[Graphics:../Images/index_gr_253.gif]

[Graphics:../Images/index_gr_254.gif]

[Graphics:../Images/index_gr_255.gif]

[Graphics:../Images/index_gr_256.gif]

[Graphics:../Images/index_gr_257.gif]

[Graphics:../Images/index_gr_258.gif]


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