Frequent question: What is mole fraction of solute in 1 molal solution?

What is the mole fraction of solvent in 1 molal aqueous?

1 molal aqueous solution means that 1 mol/kg that is 1 mol of solute is present in the 1000 g of the water(here the aqueous means that solvent is water). The mole fraction of solvent in 0.1 molal aqueous solution is 0.9982.

What is the mole fraction of solute in a 1.00 molal?

So the question says 1.00 molal aqueous solution, which means 1.00 moles of the solute is present in 1000 g of the solvent. Hence the answer is 0.017683. This can be rounded off to 0.0177. So, the correct answer is 0.0177.

What is the mole fraction of solute in 0.5 molal aqueous solution?

0.5 molal solution means 0.5 moles of solute in 1 kg of water. The molar mass of H2O = 18.015 g/mol.

What will be the molality of ethanol in water?

Molality of ethanol means the number of moles of ethanol present in 1000 g of water. Therefore, 0.12 moles of ethanol are present in 0.88 moles of water.

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Why is 1 molar aqueous solution more concentrated?

1 molar aqueous solution is more concentrated than 1 molal aqueous solution because 1 molar solution contain 1 mole of solute in 1 litre of the solution which include both solute and solvent. So, the mass of solvent (i.e. water) is less than 1000 gram. … Hence concentration will be more in 1 molar aqueous solution.

What are the unit of mole fraction?

D. Mole fraction is a unit of concentration, defined to be equal to the number of moles of a component divided by the total number of moles of a solution. Because it is a ratio, mole fraction is a unitless expression.

What is the mole fraction of solute if Molality of aqueous solution is 1?

The mole fraction of the solute in a 1 molal aqueous solution is: 1. 1.8.

What is the mole fraction of methyl alcohol?

Therefore, the mole fraction of methyl alcohol in the solution is 0.086.

What is mole fraction of water?

In an aqueous solution mole fraction of water is 0.75.

What is the relation between molality and mole fraction?

The mole fraction of any component of a solution is defined as the ratio of the number of moles of that component present in the solution to the total number of moles of all the components of the solution. Molality is defined as the total moles of a solute contained in a kilogram of a solvent.

What do you mean by 1 molal solution?

A solution obtained by dissolving one gram of the solute in 1000 grams of solvent is known as a 1 molal solution. For example, when 60 g of NaOH are dissolved in 1000 g of solvent, the solution contains 1.5 moles of solute in 1 kg of solvent. Therefore, the molality is 1.5. … The SI unit for molality is mol/kg.

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What is the mole fraction of 2.5 molal solution?

2.5 m aqueous solution means that 2.5 moles of the solute are dissolved in 1000 g of water. (2.5mol)(2.5mol+55.5mol)=(2.5mol)(58mol)=0.043.

What is the mole fraction of 2.5 m?

So [0.043] is the mole fraction of the solute in a 2.5M aqueous solution.