A mixture consists of 78,1 g benzene (C6H6) and 92,1 g toluene (C7H8). Both substances are volatile, and their vapour pressures (in the pure form) are as follows at 20°C: Benzene: 0.0988 atm Toluene: 0.0287 atm a) Which substance, benzene or toluene, would have the lowest boiling point in the pure form? Give a reason or your answer. b) Calculate the vapour pressure of the benzene-toluene mixture at 20°C.
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.
A mixture consists of 78,1 g benzene (C6H6) and 92,1 g toluene (C7H8). Both substances
are volatile, and their vapour pressures (in the pure form) are as follows at 20°C:
Benzene: 0.0988 atm
Toluene: 0.0287 atm
a) Which substance, benzene or toluene, would have the lowest boiling point in the
pure form? Give a reason or your answer.
b) Calculate the vapour pressure of the benzene-toluene mixture at 20°C.
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