Bubble Point Curve
Bubble Point Curve - Related Videos
01:13
Excess Pressure Inside a Drop and a Bubble
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2023
The shape of a small drop of liquid can be considered spherical, neglecting the effect of gravity. This drop can further be considered as two equal hemispherical drops put together due to surface tension. The forces acting on the spherical drop are due to the pressure of the liquid inside the drop, the pressure due to air outside the drop, and the force due to the surface tension acting on the two hemispherical drops. where γ corresponds to the surface tension. Recalling that the force per...
07:43
Calibration Curves
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2023
Source: Laboratory of Dr. B. Jill Venton - University of Virginia Calibration curves are used to understand the instrumental response to an analyte and predict the concentration in an unknown sample. Generally, a set of standard samples are made at various concentrations with a range than includes the unknown of interest and the instrumental response at each concentration is recorded. For more accuracy and to understand the error, the response at each concentration can be repeated so an error...
08:19
Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System
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Cited by 2 •
2021
A fast and reliable technique is proposed to control the shape oscillations of a single, trapped acoustic bubble that is based on coalescence technique between two bubbles. The steady-state, symmetry-controlled bubble shape oscillations allow analysis of the fluid flow generated in the vicinity of the bubble interface.
02:44
Heating and Cooling Curves
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2020
When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves. For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
02:23
Acid-Base Titration Curves
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2020
A titration curve is a plot of some solution property versus the amount of added titrant. For acid-base titrations, solution pH is a useful property to monitor because it varies predictably with the solution composition and, therefore, may be used to monitor the titration’s progress and detect its endpoint. Acid-base titration can be performed with a strong acid and a strong base, a strong acid and a weak base, or a strong base and a weak acid. For a titration carried out for 25.00 mL of 0.100...
FAQs
The curve changes because bubble formation depends on the relationship between liquid composition, component vapor pressures, and system pressure. At a specified composition, changing pressure alters the condition required for the summed partial pressures to match that pressure. Conversely, at fixed pressure, changing composition shifts the temperature at which vaporization begins.
The more volatile component contributes a larger vapor-pressure share under the same conditions, so it makes a greater contribution to the total pressure when the first bubble forms. As a result, the initial vapor composition differs from the liquid composition and is enriched in the more volatile component, an effect central to vapor-liquid separation.
On a temperature-composition or pressure-composition diagram, the curve marks the boundary between a liquid-only region and a liquid-vapor region. Conditions on the liquid side have not yet produced a vapor phase, whereas crossing the boundary indicates that vaporization has begun. This boundary therefore identifies the onset of two-phase behavior.
First identify the system pressure or temperature and the liquid composition of interest on the appropriate diagram. The curve then indicates the condition where vapor first appears. Because the first vapor is enriched in the more volatile component, the diagram helps compare liquid and emerging vapor compositions and assess how strongly the mixture favors vaporization.
Fractional distillation depends on repeated vaporization and condensation to separate mixture components. A bubble point curve shows when liquid at a given composition begins to vaporize and indicates that the initial vapor is richer in the more volatile component. Analysts can therefore use the curve to anticipate composition changes during separation and evaluate distillation behavior.
A binary-mixture analysis can identify the temperature or pressure required for vaporization to start at a selected composition. It can also indicate whether the system remains liquid or enters the liquid-vapor region, while revealing the enrichment of the more volatile component in the first vapor. These outcomes support prediction and evaluation of separation processes.