Question
Asked Oct 20, 2019
13 views

In a mixture of two gases, the partial pressure of methane is 0.175atm and the partial pressure of oxygen is 0.250atm.

If the gases occupy a volume of 10.5 liters at 65 degrees Celsius, what is the number of moles of methane in the mixture?

check_circle

Expert Answer

star
star
star
star
star
1 Rating
Step 1

Given,

Partial pressure of methane = 0.175 atm

Partial pressure of oxygen = 0.250 atm

Volume, V = 10.5 L

Temperature, T = 65 oC = (65 + 273) K = 338 K

Step 2

Total pressure, P = 0.175 atm + 0.250 atm = 0.425 atm

The total number of moles (n) can be calculated using the ideal gas equation as:

PV nRT
PV
n =
RT
0.425 atm X 10.5 L
n =
Latm
0.0821
x 338 K
mol K
n 0.161 mol
help_outline

Image Transcriptionclose

PV nRT PV n = RT 0.425 atm X 10.5 L n = Latm 0.0821 x 338 K mol K n 0.161 mol

fullscreen
Step 3

Mole fraction of methane ca...

Partial pressure of methane Mole fraction of methane x total pressure
Partial pressure of methane
Mole fraction of methane
Total pressure
0.175 atm
Mole fraction of methane
=0.412
0.425 atm
help_outline

Image Transcriptionclose

Partial pressure of methane Mole fraction of methane x total pressure Partial pressure of methane Mole fraction of methane Total pressure 0.175 atm Mole fraction of methane =0.412 0.425 atm

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Chemistry

Ideal gases

Related Chemistry Q&A

Find answers to questions asked by student like you

Show more Q&A add
question_answer

Q: Predict all major and minor products. Show the intermediates and the movement of electrons as well p...

A: (d) here, the alkyl is tertiary and tertiary alkyl halides with strong base (DBN) undergoes eliminat...

question_answer

Q: The electron affinity of oxygen is -141kj/mol, corresponding to the reaction  O(g)+e-—>O-(g) The ...

A: The reaction takes place according to the following steps

question_answer

Q: Question 1

A: Qualitative analysis is a branch of chemistry that deals with the identification of elements present...

question_answer

Q: Using the Heisenberg uncertainty principle, calculate Δx for a baseball with Δv = 0.178 m/s. The mas...

A: According to Heisenberg uncertainty principle, it is impossible to measure simultaneously the positi...

question_answer

Q: question 4

A: Given information:Number of moles of CO(g) = 1.0 moleNumber of moles of CO2(g) = 1.0 mole

question_answer

Q: Indicates the major types of intermolecular forces - (1) ionic bonds, (2) dipole-dipole attractions,...

A: A chemical compound consists of two or more different elements which are bonded with each other thro...

question_answer

Q: What is the pH of 0.0200 M HNO3?

A: Given, 0.0200 M HNO3

question_answer

Q: Use equilibrium concentrations to calculate K.   Some NOBr is placed in a flask and heated t...

A: GivenConcentration of NOBr= 2.14x10-2MConcentration of  NO = 2.66x10-2MConcentration of Br2 = 2.98 x...

question_answer

Q: Thermal neutrons are neutrons that move at speeds comparable to those of air molecules at room tempe...

A: Wavelength can be calculated using the given equation: