Water and ethanol, CH3CH2OH(l), are miscible, that is,

Chapter 4, Problem 99

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Water and ethanol, CH3CH2OH(l), are miscible, that is, they can be mixed in all proportions. However, when these liquids are mixed, the total volume of the resulting solution is not equal to the sum of the pure liquid volumes, and we say that the volumes are not additive. For example, when 50.0 mL of water and 50.0 mL of CH3CH2OH(l), are mixed at 20 C, the total volume of the solution is 96.5 mL, not 100.0 mL. (The volumes are not additive because the interactions and packing of water molecules are slightly different from the interactions and packing of CH3CH2OH molecules.) Calculate the molarity of CH3CH2OH in a O2(g), H2(g), Fe2O3(s) CaCl2(aq) + H2O(l) + CO2(g) CaCO3(s) + 2 HCl(aq) CO2(g)? CaCO3 SiO2 . CaCO3 Cu2(OH)2CO3 (P4), (CaSiO3), solution prepared by mixing 50.0 mL of water and 50.0 mL of CH3CH2OH(l) at 20 C. At this temperature, the densities of water and ethanol are 0.99821 g/mL and 0.7893 g/mL, respectively.