The information that is/are needed to determine the molar mass of an u...
Elevation of boiling point and depression in freezing point are directly related to molality of solution.
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The information that is/are needed to determine the molar mass of an u...
Ya d is right answer as in formula of elevation in boiling point or depression in freezing point these all terms required
The information that is/are needed to determine the molar mass of an u...
To determine the molar mass of an unknown solute, several pieces of information are needed. These include:
a) The amount of solute used in the experiment:
- The molar mass of a substance is defined as the mass of one mole of that substance. Therefore, in order to determine the molar mass, we need to know the mass of the solute used in the experiment. This can be measured using a balance or other measuring devices.
b) The molal boiling or freezing constant value of the solvent:
- The boiling point and freezing point of a solvent are influenced by the presence of solute particles. The molal boiling or freezing constant (Kb or Kf) is a characteristic property of a solvent and is used to determine the molar mass of a solute. By measuring the change in temperature caused by the presence of a solute, and knowing the molal boiling or freezing constant of the solvent, we can calculate the molar mass of the solute using the formula:
Molar mass = (K * W) / ΔT
where K is the molal boiling or freezing constant, W is the mass of the solute used, and ΔT is the change in temperature caused by the solute.
c) The amount of solvent used in the experiment:
- The molar mass of a solute is determined based on its effect on the boiling or freezing point of the solvent. In order to accurately measure this effect, we need to know the amount of solvent used in the experiment. This can be measured using a graduated cylinder or other measuring devices.
By having all of the above information, we can accurately determine the molar mass of the unknown solute.