The Dumas method was used to determine the molar mass of an unknown volatile liquid. Atmospheric pressure was 1.000 atm. Volume of flask was measured as 248 mL. Water bath was maintained at boiling temperature until liquid completely evaporated. Then the flask was cooled down. Mass of condensed vapor was determined as 0.4704 g. The liquid is likely to be: (A) Acetone, (CH3)2CO (B) Isopropanol C3H7OH (C) Diethyl ether (C2H5)2O (D) Isooactane C8H18
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 Dumas method was used to determine the molar mass of an unknown volatile liquid. Atmospheric pressure was 1.000 atm. Volume of flask was measured as 248 mL. Water bath was maintained at boiling temperature until liquid completely evaporated. Then the flask was cooled down. Mass of condensed vapor was determined as 0.4704 g.
The liquid is likely to be:
(A) Acetone, (CH3)2CO
(B) Isopropanol C3H7OH
(C) Diethyl ether (C2H5)2O
(D) Isooactane C8H18
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