What is osmotic pressure of a solution of bovine insulin...

What is osmotic pressure of a solution of bovine insulin (molar mass, 5700 $\mathrm{g} \mathrm{mol}^{-1} )$ at $18^{\circ} \mathrm{C}$ if 100.0 $\mathrm{mL}$ of the solution contains 0.103 $\mathrm{g}$ of the insulin? (a) Outline the steps necessary to answer the question. (b) Answer the question.

What is osmotic pressure of a solution of bovine insulin (molar mass, 5700 $\mathrm{g} \mathrm{mol}^{-1} )$ at $18^{\circ} \mathrm{C}$ if 100.0 $\mathrm{mL}$ of the solution contains 0.103 $\mathrm{g}$ of the insulin?
(a) Outline the steps necessary to answer the question.
(b) Answer the question.

Key Concepts

Molar Mass

Molar mass is the mass of one mole of a substance and is used to convert between the mass of a solute and the number of moles. This conversion is essential for determining the molarity of a solution from a given mass of solute, which is a necessary step in calculations involving osmotic pressure.

Van't Hoff Equation

The van't Hoff equation, ? = iMRT, relates osmotic pressure (?) to the molarity (M) of the solution, the universal gas constant (R), the absolute temperature (T) in Kelvin, and the van't Hoff factor (i), which accounts for the number of particles produced by each solute molecule in solution. This equation is fundamental in understanding how solute concentration and temperature affect osmotic pressure.

Temperature Conversion

Temperature conversion from degrees Celsius to Kelvin is critical for thermodynamic calculations because the Kelvin scale is an absolute temperature scale required by equations involving the gas constant. The conversion is achieved by adding 273.15 to the Celsius temperature, ensuring that the temperature used in the van't Hoff equation is in the proper units.

Osmotic Pressure

Osmotic pressure is a colligative property that measures the pressure required to stop the net flow of solvent across a semipermeable membrane from a pure solvent into a solution. It depends on the number of solute particles rather than their identity, making it useful for determining properties such as molecular weight and concentration in solutions.

Molarity

Molarity is the concentration of a solution expressed as moles of solute per liter of solution. It is a key concept for calculations involving solution properties, including osmotic pressure, because it provides a direct measure of the number of dissolved solute particles present per unit volume.

Transcript

Please give Ace some feedback