Question

A tank contains a mixture of helium, neon, and argon gases. If the total pressure in the tank is 490. mmHg and the partial pressures of helium and argon are 215 mmHg and 102 mmHg, respectively, what is the partial pressure of neon

Answer 1

Answer: The partial pressure of neon is 173 mmHg

Step-by-step explanation:

According to Dalton's law, the total pressure is the sum of individual pressures.

`p_(total)=p_A+p_B+p_C`

Given :
`p_(total)` =total pressure of gases = 490 mm Hg

`p_(He)` = partial pressure of Helium = 215 mmHg

`p_(Ar)` = partial pressure of argon = 102 mm Hg

`p_(Ne)` = partial pressure of neon= ?

`p_(total)=p_(He)+p_(Ar)+p_(Ne)`

`490=215+102+p_(Ne)`

`p_(Ne)=173mmHg`

Thus partial pressure of neon is 173 mmHg