Chapter 12.7, Problem 2RC

Interpretation Introduction

Interpretation:

The approximate $NaCl$ concentration required by physician for intravenous injection with osmotic pressure of $\text{7}\text{.4}\text{atm}$ at ${\text{37}}^{\text{o}}\text{C}$ temperature should be identified.

Concept introduction

Osmotic pressure is the pressure that is needed to stop osmosis. Osmotic pressure of the solution is directly proportional to the concentration of the solution. We can calculate osmotic pressure by using this formula is given by,

Osmotic pressure $\text{(π) = iMRT}$

Where,

$\text{M-}$ Molarity of the solution $\left(\text{mol/L}\right)$

$\text{R-}$ Ideal gas constant ($0.08206{\text{L atm mol}}^{\text{-1}}{\text{K}}^{\text{-1}}$)

$\text{T-}$ Temperature in Kelvin

$\text{i-}$ Von’t Hoff’s factor

Molarity (M): The concentration for solutions is expressed in terms of molarity. Molarity is number of moles of the solute present in liter of the solution.

$\text{Molarity = }\frac{\text{No}\text{. of moles of solute}}{\text{Volume of solution in L}}$