Solution molar mass

Keywords. Solution properties. Regularly branched structures. Randomly and hyperbranched polymers. Shrinking factors. Fractal dimensions. Osmotic modulus of semi-di-lute solutions. Molar mass distributions, SEC/MALLS/VISC chromatography... 

Compute the boiling point of a solution containing 24.0 g of a nonvolatile solute (molar mass = 58.0 g/mol) and 600 g of water when the barometric pressure is such that pure water boils at 99.725°C (Khp = 0.513 K kg/mol for... 

Substituting, we get AT = (A )(grams of solute)/(molar mass of solute)(kg of solvent)... 

What is the molar concentration of a solution containing 16.0g CH3OH in 200 cm of solution Molar mass of CH3OH is 32.0. 

Problem A buffered solution maintains acidity as a reaction occurs. In living cells, phosphate ions play a key buffering role, so biochemists often study reactions in such solutions. How many grams of solute are in 1.75 L of 0.460 M sodium monohydrogen phosphate Plan We know the solution volume (1.75 L) and molarity (0.460 M), and we need the mass of solute. We use the known quantities to find the amount (mol) of solute and then convert moles to grams with the solute molar mass, as shown in the roadmap. 

Nonvolatile Nonelectrolyte Solutions Solute Molar Mass Volatile Nonelectrolyte Solutions Strong Electrolyte Solutions... 

Using Colligative Properties to Find Solute Molar Mass... 

Colligative properties are related to the number of dissolved solute particles, not their chemical nature. Compared with the pure solvent, a solution of a nonvolatile nonelectrolyte has a lower vapor pressure (Raoult s law), an elevated boiling point, a depressed freezing point, and an osmotic pressure. Colligative properties can be used to determine the solute molar mass. When solute and solvent are volatile, the vapor pressure of each is lowered by the presence of the other. The vapor pressure of the more volatile component is always higher. Electrolyte solutions exhibit nonideal behavior because ionic interactions reduce the effective concentration of the ions. 

Although these expressions provide no information about the activity coefficient of a solute, they are useful for estimating the solute molar mass. For example, from a measurement of any of the colligative properties of a dilute solution and the appropriate theoretical relation, we can obtain an approximate value of the solute molality niB- (It is only approximate because, for a measurement of reasonable precision, the solution cannot be extremely dilute.) If we prepare the solution with a known amount a of solvent and a known mass of solute, we can calculate the amount of solute from b = nAMpjnB, then the solute molar mass is the solute mass divided by ns-... 

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