Question

A gas cylinder contains 4.1 atm of he, 0.6 atm of co2, and 2.7 atm of n2. what is the total pressure in the cylinder

Answer 1

Answer : The total pressure in the cylinder is 7.5 atm.

Solution :

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.

`P_T=p_(He)+p_(CO_2)+p_(N_2)`

where,

`P_T` = total partial pressure in the cylinder = ?

`P_(He)` = partial pressure of helium = 4.21 atm

`P_(CO_2)` = partial pressure of carbon dioxide = 0.6 atm

`P_(N_2)` = partial pressure of nitrogen = 2.7 atm

Now put all the given values is expression, we get:

`P_T=4.21atm+0.6atm+2.7atm`

`P_T=7.5atm`

Therefore, the total pressure in the cylinder is 7.5 atm.

Answer 2

7.4 atm.

Step-by-step explanation:

The total pressure of a mixture of gases is the summation of the partial pressure of the individual gases.

Ptotal = (P)He + (P)CO₂ + (P)N₂ = 4.1 atm + 0.6 atm + 2.7 atm = 7.4 atm.