CHEMISTRY COLLEGE

Which statement about boiling point is FALSE? The boiling point is higher for compounds with a high viscosity.

The boiling point of a compound is an absolute constant.

The boiling point is higher for compounds with strong intermolecular forces.

The boiling point of a compound is higher for nonvolatile compounds.

All of the above statements are true.

Answers

Answer 1
Answer:

Answer: The boiling point of water is an absolute constant

Explanation:

The boiling point of a compound is NOT an absolute constant. This is because at certain conditions such as a change in altitude, the boiling point of a compound changes.

As temperature increases, evaporation increases and vapour pressure increases. Compounds boils when vapour pressure equal to the atmospheric pressure.

At higher altitudes, atmospheric pressure is decreses.

When atmospheric pressure is decresed, the vapour pressure of the compound is lowered to reach boiling point. Therefore, the temperature needed for vapour pressure to equal atmospheric pressure is lower. The boiling point is lower at higher altitude.

Hence boiling point depends on atmospheric pressure


Related Questions

MIDDLE SCHOOL

Why do theories and model change over time?

Answers

The first model of the atom was developed by JJ Thomson in 1904, who thought that atoms were composed purely of negatively charged electrons. This model was known as the 'plum pudding' model

HIGH SCHOOL

What is contained in the xylem tissues that travel from the roots to the leaves?. A.Water and inorganic ions. B.Water and organic molecules. C.Organic molecules and inorganic ions

Answers

"Water and inorganic ions" is the one among the following choices that is contained in the xylem tissues that travel from the roots to the leaves. The correct option among all the options that are given in the question is the first option or option "A". I hope that the answer has helped you.
A.Water and inorganic ions.

The xylem is the main tissue conducts water, nutrients and minerals.

hope this helps!
MIDDLE SCHOOL

When a chemist collects hydrogen gas over water, she ends up with a mixture of hydrogen and water vapor in her collecting bottle If the pressure in the collecting bottle is 97.1 kilopascals and the vapor pressure of the water is 3 2 kilopascals, what is the partial pressure of the hydrogen?

Answers

Answer: The partial pressure of hydrogen is 93.9 kPa.

Explanation:

To calculate the partial pressure of hydrogen, we will follow Dalton's Law.

This law states that the total pressure of a mixture of gases is equal to the sum of the individual pressures exerted by the constituent gases.

Mathematically,

According to the question,

We are given:

Putting values in above equation, we get:

Hence, the partial pressure of hydrogen is 93.9 kPa.

Answer:

i think he is correct but i also think its b

Explanation:

HIGH SCHOOL

Water is dissolved into n-butanol (a polar liquid). Which is the second step at the molecular level as water dissolves into n-butanol? A. n-Butanol mixes with water.

B. Water molecules are carried into n-butanol.

C. n-Butanol molecules surround water molecules.

D. n-Butanol molecules are attracted to the surface of the water molecules.

Answers

Answer:

C. n-Butanol molecules surround water molecules.

Explanation:

Because both liquids are polar, they can be mixed (polar dissolves polar, and nonpolar dissolves nonpolar). N-Butanol is the solvent, so it has a large amount in the solution, and water is the solute. When a liquid-liquid solution is placed, the solvent surrounds the molecules of the solute, so the solute is dissociated in the solution.

Then, the n-Butanol molecules surround the water molecules.

Answer:

c

Explanation:

Random Questions