Chemistry, 14.07.2019 18:00, zozo88

Agas mixture contains 1.25 g n2 and 0.85 g o2 in a 1.55 l c ontainer at 18 °c. calculate the mole fraction and partial pressure of each component in the gas mixture.

Answers: 1

Show answers

Answers

answered: saltedcaramel60

- mole fraction of nitrogen is 0.626 and mole fraction of oxygen is 0.374.

partial pressure of nitrogen is 0.687 atm and partial pressure of oxygen is 0.410 atm.

Solution:- Moles of nitrogen = 1.25 g x (1mol/28g) = 0.0446 mol

moles of oxygen = 0.85 g x (1mol/32g) = 0.0266 mol

Total moles of gases in the container = 0.0446 + 0.0266 = 0.0712

mole fraction of a gas = moles of gas/total moles of the gases

so, mole fraction of nitrogen = 0.0446/0.0712 = 0.626

mole fraction of oxygen = 0.0266/0.0712 = 0.374

Volume of the container is 1.55 L and the temperature is 18 degree C that is 18 + 273 = 291 K

From ideal gas law equation, PV = nRT

P = nRT/V

Partial pressure of nitrogen = (0.0446 x 0.0821 x 291)/1.55 = 0.687 atm

and the partial pressure of oxygen = (0.0266 x 0.0821 x 291)/1.55 = 0.410 atm

answered: dieguezisabel

Moles are calculated as the ratio of given mass to the molar mass. The mole fraction and partial pressure of each component in the mixture of gases will be:

Nitrogen

Mole fraction = 0.626Partial Pressure = 0.687 atm

Oxygen

Mole fraction = 0.374Partial Pressure = 0.410 atm

Moles are the base units of a substance. It is calculated as the ratio of given mass to the molar mass.

Now, the moles fraction of nitrogen will be:

$\begin{aligned}\text{Mole}&=1.25\times\dfrac{1 \text{mol}}{28 \text g}\\\\&=0.0446 \text{mol}\end$

Similarly, moles of oxygen will be:

$\begin{aligned}\text{Mole}&=0.85\times\dfrac{1 \text{mol}}{32 \text g}\\\\&=0.0266 \text{mol}\end$

Now, Total moles of gases = 0.0446 + 0.0266 = 0.0712

Also,

$\text{Mole fraction of gas}&=\dfrac{\text{moles of gas}}{\text{total moles of gases}}$

Mole fraction of nitrogen:

$\begin{aligned}\text{Mole fraction of gas}&=\dfrac{\text{moles of Nitrogen}}{\text{total moles of gases}}\\\\\text{Mole fraction of Nitrogen}&=\dfrac{0.0446}{0.0712}\\\\&=0.626\end{aligned}$

Similarly, for oxygen:

$\begin{aligned}\text{Mole fraction of gas}&=\dfrac{\text{moles of Oxygen}}{\text{total moles of gases}}\\\\\text{Mole fraction of Oxygen}&=\dfrac{0.0266}{0.0712}\\\\&=0.374\end{aligned}$

Also, given that,

Volume of container = 1.55 LTemperature = 18-degree celcius Ideal gas equation = PV = nRT

Substituting the values:

Partial pressure of nitrogen:

$\begin{aligned}\text{Partial pressure of nitrogen\;(P)}&=\frac{\text{nRT}}{\text{V}}\\&=\frac{(0.0446\times0.0821\times291)}{1.55}\\&=0.687\;\text{atm}\end{aligned}$

Partial Pressure of Oxygen:

$\begin{aligned}\text{Partial pressure of oxygen\;(P)}&=\frac{\text{nRT}}{\text{V}}\\&=\frac{(0.0266\times0.0821\times291)}{1.55}\\&=0.410\;\text{atm}\end{aligned}$

Therefore, from the the ideal gas law equation and mole fraction, we can determine the number of moles and partial pressure of gases.

To know more about partial pressure and moles, refer to the following link:

link

answered: Guest

honesty and integrity.

inspire others.

commitment and passion.

good communicator.

decision-making capabilities.

accountability.

delegation and empowerment.

creativity and innovation.

here are the traits of a good leader.i'm not going to give you the examples so you can copy right it.that's illegal but i hope that this you out.

answered: Guest

The total number of electrons is 14

Other questions on the subject: Chemistry

Chemistry, 21.06.2019 20:30, pennygillbert

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

Answers: 1

continue

Chemistry, 22.06.2019 09:20, UsedForSchool2018

Which of these statements explains the difference between nuclear binding energy and the strong nuclear force ?

Answers: 3

continue

Chemistry, 22.06.2019 20:00, emilyswinge4421

Listenbase your answer to the question on the information below. nuclear radiation is harmful to living cells, particularly to fast-growing cells, such as cancer cells and blood cells. an external beam of the radiation emitted from a radioisotope can be directed on a small area of a person to destroy cancer cells within the body. cobalt-60 is an artificially produced radioisotope that emits gamma rays and beta particles. one hospital keeps a 100.0-gram sample of cobalt-60 in an appropriate, secure storage container for future cancer treatment. which choice represents the correct product for the beta decay of the co-60? fe-60ni-60fe-61ni-61

Answers: 2

continue

Chemistry, 22.06.2019 20:30, dinapaul424

Which states of matter have particles that move independently of one another with very little attraction?

Answers: 1

continue

Do you know the correct answer?

Agas mixture contains 1.25 g n2 and 0.85 g o2 in a 1.55 l c ontainer at 18 °c. calculate the mole fr...