QUESTION 2 Benzene freezes at 5.5°C under 1 atm. The density of benzene is 0.879 g/cm³ in liquid form and 0.891 g/cm³ in solid form. Its enthalpy of fusion is 10.59 kJ/mol. Estimate the new freezing point of benzene (°C) when pressure increase by 1300 atm. Instruction: Please round to 2 decimal places For example, 10.564 is written as 10.56. Hint: Follow the procedures of homework 4 question #4, but there are some differences: (1) You need to calculate the molar volume (unit: m³/mol) using molar mass of benzene devided by its density (pay attention to the unit which should be m3/mol), then calcualte Atrs using molar volume of liquid minus molar volume of solid (2) AtrsS can be calcualte using AfusH/T, where the unit of AfusH needs to be J/mol not kJ/mol. (3) after AT is calculated, you need to add the original freezing point to get the new freezing point.
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.
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