hydrogen gas is collected by water displacement. Total volume collected is 0.461 L at a temperature of 17c and a pressure of 0.989 atm. what is the pressure of dry hydrogen gas collected

Respuesta :

Answer : The partial pressure of dry hydrogen gas is, 98.26 kPa

Explanation :

According to the Dalton's law, the total pressure of the gas is equal to the sum of the partial pressure of the mixture of gasses.

[tex]P_T=p_{H_2O}+p_{H_2}[/tex]

where,

[tex]P_T[/tex] = total partial pressure = 0.989 atm  = 100.2 kPa

Conversion used : (1 atm = 101.3 kPa)

[tex]P_{H_2O}[/tex] = partial pressure of water gas = 1.94 kPa

[tex]P_{H_2}[/tex] = partial pressure of dry hydrogen gas = ?

Now put all the given values is expression, we get the partial pressure of the dry hydrogen gas.

[tex]100.2kPa=1.94kPa+p_{H_2}[/tex]

[tex]p_{H_2}=98.26kPa[/tex]

Therefore, the partial pressure of dry hydrogen gas is, 98.26 kPa