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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Estimate the osmotic pressure of human blood at 37 °C. Assume blood is isotonic with a 0.154 M NaCl solution, and assume the van’t Hoff factor, i, is 1.90 for NaCl.

Interpretation Introduction

Interpretation: The osmotic pressure of human blood is to be determined.

Concept introduction:

Colligative properties: Properties of solutions which having influence on the concentration of the solute in it. Colligative properties are,

  • Decrease in the vapor pressure
  • Increase in the boiling point
  • Decline in the freezing point
  • Osmotic pressure

Osmotic pressure is calculated by using the equation,

  π=icRT

  where,

  c is the molar concentration

  i is the van’t Hoff factor

Explanation

Given,

  R=0.08206L.atm K1mol1T=370C=(37+273)K=310Ki=1.90

  Molality of the solution is 0.154M

Therefore,

The osmotic pressure of the solution is,

  π=icRT=(1

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