   Chapter 13.3, Problem 13.3CYU

Chapter
Section
Textbook Problem

What is the concentration of CO2 in water at 25 °C when the partial pressure is 0.33 bar? (Although CO2 reacts with water to give traces of H3O+ and HCO3−, the reaction occurs to such a small extent that Henry’s law is obeyed at low CO2 partial pressures.)

Interpretation Introduction

Interpretation: The concentration of carbon di-oxide in water to be identified.

Concept introduction:

Henry’s law: The solubility of a gas in liquid is directly proportional to the gas pressure.

Sg= kHPg,where,Sgisthegassolubility(inmol/kg)kHis Henry's constant Pg is the partial pressure of the gaseous solute.

Explanation

Given data:

Partial Pressure ofCO2,(PCO2) = 0.33 bar;

Solubility can be calculated using the equation given below:

Sg= kHPg,where,Sgisthegassolubility(inmol/kg)kHis Henry's constant &

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