Question

calculate the concentration of CO2 in a soft drink that is bottle with a partial pressure of Co2 of 4 atm over the liquid at 25°C. The henry's law constant for Co2 in water at 25°C is 3.1×10^(-2) mol/litre atm?

Answer 1

hey

gd evng

here is your answer

Henry's law  

According to Henry's law  

p= C / KH [ moles / lit ] / [ moles / lit - atm ] atm  

c = ? , pCo2= 4 atm  

where p is the partial pressure , c  is concentration (or molarity) of gas in solution (in mol/L) and kH is a constant  

known as the Henry's law constant,  

 kH for CO2 dissolved in water at 298 K = 3.1×10^−2 mole / lit-atm  

c = p*KH  

c = 4*3.1*10^-2 = 0.124 moles/ lit

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