Ethanol , C2H5OH, melts at -114oC and boils at 78oC. The enthalpy of fusion for ethanol is 5.02 kJ/mol, and its enthalpy of vaporization is 38.56 kJ/mol. The specific heats of solid, liquid, and gaseous ethanol are 0.97J/goC, 2.3 J/goC, and 1.4 J/goC, respectively. How much heat is required to convert 2.05 g of liquid ethanol at -109oC to a gas at 78oC.
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
Ethanol , C2H5OH, melts at -114oC and boils at 78oC. The enthalpy of fusion for ethanol is 5.02 kJ/mol, and its enthalpy of vaporization is 38.56 kJ/mol. The specific heats of solid, liquid, and gaseous ethanol are 0.97J/goC, 2.3 J/goC, and 1.4 J/goC, respectively. How much heat is required to convert 2.05 g of liquid ethanol at -109oC to a gas at 78oC.
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