Question

A closed soda can has the concentration of ${\text{CO}}_2\text{at}{25}^{\circ }C$ equal to $0.408m$. Thus, the pressure of ${\text{CO}}_2$ gas in the can is $(K_H=0.034kgmo{l}^{-1}bar)$

• A. $0.005bar$
• B. $0.007bar$
• C. $0.014bar$
• D. $0.071bar$

Answer 1

The correct option is C $0.014bar$

From Henry's law,
Partial pressure, ${\rho }_{C{O}_2}=K_H\times \text{Solubility}$

$\therefore {\rho }_{C{O}_2}=0.034{\text{kg mol}}^{-1}\text{bar}\times 0.408{\text{mol kg}}^{-1}$

$=0.014\text{bar}$
Hence, (C) is the correct option.