Table of Contents
- 1 Does glucose have a high vapor pressure?
- 2 Does NaCl have a high or low vapor pressure?
- 3 Which solution will have the lowest vapor pressure?
- 4 Which has maximum lowering vapor pressure?
- 5 Which of the following has the highest vapor pressure?
- 6 Does NaCl have a lower vapor pressure than pure water?
- 7 What is the total ionic strength of NaCl and CaCl2?
Does glucose have a high vapor pressure?
1: A Model Depicting Why the Vapor Pressure of a Solution of Glucose Is Less Than the Vapor Pressure of Pure Water. (c) When the glucose solution reaches equilibrium, the concentration of water molecules in the vapor phase, and hence the vapor pressure, is less than that of pure water.
Does NaCl have a high or low vapor pressure?
The figures below illustrate how the vapor pressure of water is affected by the addition of the non-volatile solute, NaCl. there are fewer water molecules in the vapor (i.e., lower vapor pressure) above the NaCl solution than in the vapor above pure water, and.
How do you know what has more vapor pressure?
When comparing vapor pressures we need to be making comparisons at the same temperature. Thus at room temperature, the substance with the lowest boiling point will have the highest vapor pressure (easiest to get into the gas phase). The substance with the highest boiling point will have the lowest vapor pressure.
Are the vapor pressures of glucose and sucrose the same?
No, they are not the same.
Which solution will have the lowest vapor pressure?
aluminum chloride solution
Because aluminum chloride dissociates to form the greatest number of dissolved solute particles, the aluminum chloride solution will have the lowest vapor pressure.
Which has maximum lowering vapor pressure?
urea
Note: Relative lowering of vapor pressure depends on concentration of solute. In the question, molalities of solutes are given. So, the solute whose concentration is greater that is, urea has the highest lowering of vapor pressure.
Do salts have vapor pressure?
However, at a given temperature, the vapor pressure of salt water will always be lower than the vapor pressure of pure water. In sum, the vapor pressure of an equal amount of pure water will always be greater than the vapor pressure of an equal amount of salt water.
Which solution has least Vapour pressure?
Na3PO4 consist of maximum ions hence it show lowest vapour pressure.
Which of the following has the highest vapor pressure?
Among the choices, liquid ether molecules more readily escape as vapor so that the boiling point is reached sooner. At 25°C, ether has the highest vapor pressure.
Does NaCl have a lower vapor pressure than pure water?
Note that: there are fewer water molecules in the vapor (i.e., lower vapor pressure) above the NaCl solution than in the vapor above pure water, and there are no sodium ions or chloride ions in the vapor above the NaCl solution.
How does the vapor pressure change with the solute in a solution?
The vapor pressure of the solvent above a solution changes as the concentration of the solute in the solution changes (but it does not depend on the identity of either the solvent or the solute(s) particles (kind, size or charge) in the solution).
Why does NaCl give 2 ions after dissolution but BaCl2 gives 3?
As the number of ions of non-volatile solute increases in the solution, the lowering in vapour pressure increases. So NaCl after dissolution gives two ions while BaCl2 gives three.
What is the total ionic strength of NaCl and CaCl2?
A first question is if this approach is still valid for concentrated solutions. For a saturated CaCl2 and NaCl mixture, my calculated total ionic strength is around 20. (concentrations are calculated using the solubility coefficient). At this total ionic strength, NaCl is oversaturated and no data of the water vapor pressure is available.