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How to calculate the vapor pressure of water?

$48~\mathrm{l}$ of dry $\ce{N2}$ passes through $36~\mathrm{g}$ $\ce{H2O}$ at $300~\mathrm{K}$, and this results in a water loss of $1.20~\mathrm{g}$. The vapor pressure of water is? The solution ...
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28 views

Is atmospheric pressure acting only on the contents or also on the container?

$22~\mathrm{g}$ of dry ice is placed in an an empty $600~\mathrm{ml}$ closed vessel at $298~\mathrm{K}$. Find the final pressure inside the vessel, if all $\ce{CO2}$ gets evaporated? Now by ...
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62 views

Thought Experiment on Boiling

In this thought experiment, let’s consider the surrounding to be air that is composed of entirely water vapor (no other species like $\ce{O2}$ and $\ce{N2}$ are present). The surrounding is infinitely ...
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42 views

Will the water at the bottom of the tube boil at the same temperature as the water at the top of the tube?

Consider a long, vertical tube of water, as shown below: Where $P_\mathrm{atm}$ is the atmospheric pressure and $P_\mathrm{bottom}$ is the pressure at the bottom of the tube. The tube is long ...
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62 views

What causes the lowering of vapour pressure in volatile/nonvolatile solvent mixtures?

"Based on Figure 13.18, you might think that the reason volatile solvent molecules in a solution are less likely to escape to the gas phase, compared to the pure solvent, is that the solute molecules ...
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How does grease become airborne?

When cooking in the kitchen you usually use some oil or butter to bake your meat and potatoes in. After some weeks without cleaning (which happens every now and then) the surroundings of the stove ...
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Can you concentrate alcohol by evaporating the aqueous solution at room temp and collecting on a cold surface?

I have a bowl containing cheap wine and an immersible fish tank heater. The heater warms the wine to 30 deg C. The bowl is located in a large closed bucket, where it sits on a support. The bucket is ...
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1answer
32 views

Understanding Millimeter of Mercury

A Millimeter of Mercury(mmHg) is by definition the pressure exerted on a column of mercury 1 mm in height. I found this definition confusing because it doesn't say how the diameter of the container ...
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225 views

How does Ostwald-Walker method work?

From searching online I found this: The apparatus consists of two sets of bulbs. The first set of three bulbs is filled with solution to half of their capacity and second set of another three ...
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1answer
555 views

What is the difference between having a volatile versus a non-volatile solute at the boiling point of the solution?

I've been getting mixed answers online between the differences of these two. This is what I have gathered: A non-volatile solute does not produce vapour at the boiling point of the solution. ...
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is sublimation a property of all substances?

I wonder if sublimation can be done only on certain substances like Iodine or it can be done on all substances in other words, can sublimation be done for example on water? if it can not then why?
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How to calculate melting/boiling points at different pressures

I know water boils at below room temperature in a vacuum, and want to know if there's an equation to calculate the melting or boiling points of elements or compounds at a given pressure. How would I ...
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1answer
262 views

Liquefying butane in a freezer

If I were to put a can of liquid butane which is under pressure (eg. Lighter refill) in a freezer to get it below its boiling point of $-1^\circ C$, If it were released in an also frozen container ...
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1answer
22 views

Clarification on vapor pressure

If I have a glass of water, and the vapor pressure is the point of equilibrium where the liquid molecules are becoming gases and the gas molecules are colliding and becoming liquid at the same rate, ...
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1answer
22 views

Condition for formation of azeotropes

Consider a binary azeotropic solution of two volatile components $A, B$. I wanted to try and find out the required concentrations of $A, B$ in the solution in terms of their vapour pressures. I tried ...
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2answers
56 views

Which of these solution have the lowest vapor pressure in 298 K?

Which of these solution have the lowest vapor pressure in 298 K? Please give a brief explanation. 0.01 m $\ce {CaCl2}$ 0.01 m $\ce {NaCl}$ 0.02 m $\ce {NaCl}$ 0.015 m $\ce {CaCl2}$ 0.01 m $\ce ...
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2answers
191 views

How to determine the vapor pressure of a glycerine and propylene glycol mixture?

I am looking to calculate the minimum heat needed to create vapor from a specific mixture. I have a mixture of 60% $\ce{C3H8O3}$ (glycerine) and 40% $\ce{C3H8O2} $ (propylene glycol, ...
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1answer
71 views

Does nitrogen pressure in tyres fluctuate to much a lower degree than air with changes in temperature?

This is my first question in this site. I am referring to this question.The linked question what is the advantage of filling nitrogen in bike tubes over air and I got some answers such as: The ...
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1answer
405 views

Calculate vapor pressure from volume

For a chemistry lab, I'm required to calculate the vapor pressure of some organic solvents... methanol, ethanol, and propanol, in addition to an "unknown" sample of some solvent. In the lab, we were ...
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1answer
2k views

How to arrange substances in order of increasing vapor pressure?

During the lecture in my chemistry class, my teacher posed the following problem: Arrange in terms of increasing vapor pressure: a) 0.5m sugar b) 0.5m NaCl c) 2m ethylene glycol ...
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1answer
89 views

Why does the conversion of SO₂ to SO₃ require high pressure?

The conversion of sulphur dioxide to sulphur trioxide in the contact process for the manufacture of sulphuric acid requires the following condition: Temperature: 450 degrees Pressure: 1-2 atm, ...
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If gases turn into liquids under pressure, what does carbon dioxide turn into?

Since there is no liquid state of carbon dioxide, what will carbon dioxide turn into when exposed to high pressure?
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General rules for deciding volatility

Given an organic compound, is there any way to decide if it is volatile (or compare volatility--everything is volatile in the end)? Volatility is due to the tendency to evaporate. The conclusion I ...