Chemistry, 19.02.2020 04:25 paolacorazza

The equilibrium constant for the reaction
N2O4(g)⇌2NO2 at 2 ∘C is Kc = 2.0.
If each yellow sphere represents 1 mol of N2O4(g) and each gray sphere 1 mol of NO2 which of the following 1.0 L containers represents the equilibrium mixture at 2 ∘C?

Answers: 1

Show answers

Answers

Answer from: ummsumaiyah3583

The question is incomplete, here is the complete question:

The equilibrium constant for the reaction

N₂O₄(g)⇌2NO₂ at 2°C is Kc = 2.0

If each yellow sphere represents 1 mol of N₂O₄(g) and each gray sphere 1 mol of NO₂ which of the following 1.0 L containers represents the equilibrium mixture at 2°C?

The image is attached below.

The system which represents the equilibrium having value of K_c=2.0 is system (b)

Explanation:

Equilibrium constant in terms of concentration is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as K_c

For a general chemical reaction:

$aA+bB\rightarrow cC+dD$

The expression for $K_{c}$ is written as:

$K_{c}=\frac{[C]^c[D]^d}{[A]^a[B]^b}$

For the given chemical equation:

$N_2O_4(g)\rightleftharpoons 2NO_2$

The expression of K_c for above equation follows:

$K_c=\frac{[NO_2]^2}{[N_2O_4]}$ .......(1)

We are given:

Volume of the container = 1.0 L

Value of K_c = 2.0

Molarity of the substance is calculated by using the equation:

$\text{Molarity}=\frac{\text{Number of moles}}{\text{Volume}}$

For the given images:

For a:

Number of Gray spheres = 8 moles

Number of yellow spheres = 4 moles

Putting values in expression 1, we get:

$K_c=\frac{(8/1)^2}{(4/1)}\\\\K_c=16$

For b:

Number of Gray spheres = 4 moles

Number of yellow spheres = 8 moles

Putting values in expression 1, we get:

$K_c=\frac{(4/1)^2}{(8/1)}\\\\K_c=2$

For c:

Number of Gray spheres = 6 moles

Number of yellow spheres = 6 moles

Putting values in expression 1, we get:

$K_c=\frac{(6/1)^2}{(6/1)}\\\\K_c=6$

For d:

Number of Gray spheres = 2 moles

Number of yellow spheres = 8 moles

Putting values in expression 1, we get:

$K_c=\frac{(2/1)^2}{(8/1)}\\\\K_c=\frac{1}{2}$

Hence, the system which represents the equilibrium having value of K_c=2.0 is system (b)

The equilibrium constant for the reaction N2O4(g)⇌2NO2 at 2 ∘C is Kc = 2.0. If each yellow sphere

Answer from: Quest

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.

Answer from: Quest

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.

Another question on Chemistry

Chemistry, 22.06.2019 14:00

How does the presence of oxygen affect the chemical pathways used to extract energy from glucose?

Answers: 3

Answer

Chemistry, 23.06.2019 01:00

If a straight-chain hydrocarbon is a gas at room temperature, how many carbon atoms will it have? a. 6 carbon atoms b. 12 carbon atoms c. 24 carbon atoms d. 3 carbon atoms

Answers: 1

Answer

Chemistry, 23.06.2019 01:30

Which is an example of a highly unstable isotope that is often used in fission reactions?

Answers: 1

Answer

Chemistry, 23.06.2019 02:50

What is the typical rotational frequency frot for a molecule like n2 at room temperature (25∘c)? assume that d for this molecule is 1å=10−10m. take the total mass of an n2 molecule to be mn2=4.65×10−26kg. you will need to account for rotations around two axes (not just one) to find the correct frequency. express frot numerically in hertz, to three significant figures.

Answers: 3

Answer

You know the right answer?

The equilibrium constant for the reaction
N2O4(g)⇌2NO2 at 2 ∘C is Kc = 2.0.
If each ye...

Questions