Which of the following has the highest vapour pressure at 20 degree Celsius?

Ether has the highest vapour pressure (i.e., lowest boilint point) at any temperature.

Which of the following will have 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.

Which one of the following solutions will have higher vapour pressure than that of water?

One molar (1M) aqueous solution is more concentrated than one molal aqueous solution of the same solute. provides three ions, while NaCl provides two ions. Hence, the vapour pressure of a solution of NaCl is higher (as it gives less number of ions). Therefore, 1 molal NaCl will have the maximum vapour pressure.

Does pure water have the highest vapor pressure?

This is because as we increase the temperature of a liquid, the rate of evaporation also increases, producing more vapor. For example, at 90 degrees Celsius, pure water has the highest vapor pressure and solution C has the lowest vapor pressure.

Which liquid has highest vapour pressure at 25 C?

substance	vapor pressure at 25oC
diethyl ether	0.7 atm
bromine	0.3 atm
ethyl alcohol	0.08 atm
water	0.03 atm

What is a high vapor pressure?

Vapor pressure is a property of a liquid based on the strength of its intermolecular forces. A liquid with weak intermolecular forces evaporates more easily and has a high vapor pressure. A liquid with stronger intermolecular forces does not evaporate easily and thus has a lower vapor pressure.

Which liquid has highest Vapour pressure at 25 C?

What is the vapor pressure above a solution containing a volatile?

The vapor pressure above a solution containing a volatile solute (or solutes) is equal to the sum of the vapor pressures of the solvent and each of the volatile solutes.

What is the macroscopic view of vapor pressure?

The Macroscopic View. The vapor pressure of a liquid is the equilibrium pressure of a vapor above its liquid (or solid); that is, the pressure of the vapor resulting from evaporation of a liquid (or solid) above a sample of the liquid (or solid) in a closed container.

How does temperature affect vapor pressure of a liquid?

The vapor pressure of a liquid varies with its temperature, as the following graph shows for water. The line on the graph shows the boiling temperature for water. As the temperature of a liquid or solid increases its vapor pressure also increases.

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.