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powergirl
Calculate the molarity of a solution of ethanol in water,in which the mole fraction of ethanol is 0.040.
Can anyone help me to solve this problem?
Can anyone help me to solve this problem?
mark-ashleigh said:Then the mole fraction of water is 0.96...so the solution is 96% water and 4%Ethanol...
Molarity, also known as concentration, is a measure of the number of moles of a solute dissolved in one liter of solution.
Molarity is calculated by dividing the number of moles of solute by the volume of the solution in liters.
The molarity of a solution can change with temperature because the volume of the solution can change with temperature, but the number of moles of solute remains constant. Therefore, as the temperature increases, the molarity decreases, and vice versa.
The molarity of a solution of ethanol in water can vary depending on the concentration of ethanol and the volume of the solution. However, a commonly used concentration is 95% ethanol, which has a molarity of approximately 28.3 M.
When a solution is diluted, the volume of the solution increases while the number of moles of solute remains constant. Therefore, the molarity decreases with dilution.