# Question #a37c4

##### 1 Answer

Jan 22, 2018

#### Explanation:

The idea here is that the **total pressure** of the gaseous mixture will be equal to the **sum** of the partial pressures of its components as given by **Dalton's Law of Partial Pressures**.

So you can say that you have

#P_"total" = sum_i P_i#

Here

In your case, the mixture is said to contain three gases, each with a known partial pressure. You can thus say that in order to get the **total pressure** of the mixture, you need to add the three partial pressures.

#P_"total" = P_ ("H"_ 2) + P_( "CO"_ 2) + P_ ("CH"_ 4)#

You will end up with

#color(darkgreen)(ul(color(black)(P_"total"))) = "200 torr" + "150 torr" + "320 torr" = color(darkgreen)(ul(color(black)("670 torr")))#