This graph shows how the vapor pressure of three liquids varies with temperature: 900 800- 700 - 600 500 400 300 - cyclohexanone benzaldehyde - dimethyl sulfoxide 200. 100 0. 150 160 180 190 temperature, °C Use the graph to answer the following questions: Which liquid is the most volatile? most volatile: choose one Which is the least volatile? least volatile: choose one cyclohexanone: What is the normal boiling point of each liquid? Note: your answer must be within 1°C of the exact answer to be graded correct. benzaldehyde: dimethyl sulfoxide: °C Suppose a beaker of benzaldehyde is put inside a sealed tank containing benzaldehyde gas at 169. degree C and 704. torr. After ten minutes, will there be more liquid in the beaker, less liquid, or the same amount? O more O less O the same vapor pressure, torr
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.
The equilibrium pressure of a vapour above its liquid/solid state is called vapour pressure.
As the temperature increases, vapour pressure also increases.
The tendency of a substance to vapourize is called volatility.
Greater the vapour pressure, higher will be the concentration of the species in gaseous phase and greater wil be its volatility.
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