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Based on the graph of excess volume of ethanol vs. water, I have to classify ethanol vs. water mixture as ideal or non ideal?

Molefraction of EtOH 0.3 0.6 0.9 1.2 -0.3 0.6 T 0.9 1.2 L Excess volume of EtOH-water@ 298.15 K /ddbonline.ddbst.com/DDBSearch/onlineddboverview exe?submit. Details&systemcompliste 11, İ 74 Data taken from
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