Chemistry, 31.08.2019 21:50 pattington

Rank the following gases in order of decreasing rate of effusion.? ar c_3h_8 he

Answers: 2

Show answers

Answers

Answer from: id0617045

The decreasing order of rate of effusion will be : HeC_3H_3Ar

Explanation: Rate of effusion is defined as the volume of gas which is effused in a given time. This is very well explained by Graham's Law.

This law states that the rate of effusion of gas is inversely proportional to the square root of the molar mass of the gas. More is the molar mass of the gas, its rate of effusion will be slow.

Mathematically,

$\text{Rate of effusion}=\frac{1}{\sqrt{M}}$

Molar masses of the given gases are:

1) $C_3H_3=(3\times 12)+(3\times 1)=39g/mol$

2) Ar = 40g/mol

3) He = 4 g/mol

So, the gases which have the highest molecular mass will have the lowest rate of effusion.

Hence, the decreasing order of rate of effusion will be:

HeC_3H_3Ar

Answer from: shaylawaldo11

The decreasing order of rate of effusion of given gases is,

$\boxed{{\text{He}}{\text{Ar}}{{\text{C}}_3}{{\text{H}}_8}}$

Further Explanation:

Effusion is the process by which molecules of gas is traveled through a small hole from high pressure to the low pressure. According to graham’s law, effusion rate of a gas is inversely proportional to the square root of the molar mass of gas.

${\text{Rate of effusion}}\left({\text{R}}\right\propto\frac{1}{{\sqrt{{\mu}}}}$

Where ${{\mu }}$ is the molar mass of a gas.

The atomic mass of argon gas (Ar) is 40 g/mol.

The atomic mass of helium gas (He) is 4 g/mol.

The molar mass of propane gas $\left({{{\text{C}}_3}{{\text{H}}_8}}\right)$ is calculated as follows:

$\begin{aligned}{\text{Molar mass}} &=\left[{\left( {\text{3}}\right)\left({{\text{atomic mass of carbon}}}\right)+\left({\text{8}}\right)\left({{\text{atomic mass ofhydrogen}}}\right)}\right]\\&=\left({\text{3}}\right)\left({{\text{12g/mol}}}\right)+\left({\text{8}}\right)\left({{\text{1g/mol}}}\right)\\&=\left({36{\text{g/mol}}}\right)+\left({8{\text{ g/mol}}}\right)\\&= 44{\text{ g/mol}}\\\end{aligned}$

The order of molar mass of gases is He < Ar < ${{\text{C}}_3}{{\text{H}}_8}$ .

And, since the rate of effusion a gas is inversely proportional to the square root of the molar mass of gas, therefore, the decreasing order of rate of effusion of given gases is, He > Ar > ${{\text{C}}_3}{{\text{H}}_8}$

Learn more:

1. Determine the Charles’s law.:

2. Calculation of final volume of gas:

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Ideal gas equation

Keywords: Effusion, rate of effusion, Ar, C3H3, He, molar mass, atomic mass, rate of effusion gases, atomic mass of argon, atomic mass of helium gas, molar mass of propane gas.

Rank the following gases in order of decreasing rate of effusion.? ar c_3h_8 he

Answer from: Quest

a electronegativity decreases beacuse the size of nucleus is bigger.

Answer from: Quest

They can measure the amount of energy gained or lost

Another question on Chemistry

Chemistry, 22.06.2019 04:30

Suppose that during that icy hot lab 65,000 j of energy were transferred to 450 g of water at 20°c what would have have been the final temperature of the water

Answers: 2

Answer

Chemistry, 22.06.2019 14:30

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.

Answers: 3

Answer

Chemistry, 23.06.2019 09:00

Describe the process that was used in this lab to create magnesium oxide, specifically identifying the type of chemical reaction. explain why the product had a higher mass than the reactant, and how this relates to conservation of matter.

Answers: 2

Answer

Chemistry, 23.06.2019 11:50

Charles's law describes the relationship of the volume and temperature of gas at a constant mass and pressure. according to this law, what would happen to the temperature of the gas if its volume decreased from 1.0 l to 0.50 l?

Answers: 3

Answer

You know the right answer?

Rank the following gases in order of decreasing rate of effusion.? ar c_3h_8 he...

Questions