In 450 BCE, Greek philosopher Democritus first thought of the existence

At 400 K, the equilibrium constant for the reaction Br2 (g) + Cl2 (g) ↔ 2BrCl (g) is Kp = 7.0. A closed vessel at 400 K is charg

xz_007 [3.2K]

Answer:

(a) The equilibrium partial pressure of BrCl (g) will be greater than 2.00 atm.

Explanation:

Q is the coefficient of the reaction and is calculated the same of the way of the equilibrium constant, but using the concentrations or partial pressures in any moment of the reaction, so, for the reaction given:

Q = (pBrCl)²/(pBr₂*pCl₂)

Q = 2²/(1x1)

Q = 4

As Q < Kp, the reaction didn't reach the equilibrium, and the value must increase. As we can notice by the equation, Q is directly proportional to the partial pressure of BrCl, so it must increase, and be greater than 2.00 atm in the equilibrium.

The partial pressures of Br₂ and Cl₂ must decrease, so they will be smaller than 1.00 atm. And the total pressure must not change because of the stoichiometry of the reaction: there are 2 moles of the gas reactants for 2 moles of the gas products.

Because is a reversible reaction, it will not go to completion, it will reach an equilibrium, and as discussed above, the partial pressures will change.

5 0

3 years ago

Carbon is black, crystalline and hard. Oxygen alone is a gas. How does the substance that is formed when these two elements comb

Margarita [4]

Carbon oxides (monoxide, dioxide) are gases :)

5 0

3 years ago

A photon with 2.3 eV of energy can eject an electron from potassium. What is the corresponding wavelength of this type of light?

Ira Lisetskai [31]

Answer:

$\lambda=540.16\ nm$

Explanation:

Given that:

The energy of the photon = 2.3 eV

Energy in eV can be converted to energy in J as:

1 eV = 1.60 × 10⁻¹⁹ J

So, Energy = $2.3\times 1.60\times 10^{-19}\ J=3.68\times 10^{-19}\ J$

Considering

$Energy=\frac {h\times c}{\lambda}$

Where,

h is Plank's constant having value $6.626\times 10^{-34}\ Js$

c is the speed of light having value $3\times 10^8\ m/s$

$\lambda$ is the wavelength of the light being bombarded

Thus,

$3.68\times 10^{-19}=\frac {6.626\times 10^{-34}\times 3\times 10^8}{\lambda}$

$\frac{3.68}{10^{19}}=\frac{19.878}{10^{26}\lambda}$

$3.68\times \:10^{26}\lambda=1.9878\times 10^{20}$

$\lambda=5.40163\times 10^{-7}\ m=540.16\times 10^{-9}\ m$

Also,

1 m = 10⁻⁹ nm

So,

$\lambda=540.16\ nm$

3 0

4 years ago

Benzene is often produced as a side product during grignard reactions using phenylmagnesium bromide. how can its formation be ex

Alex_Xolod [135]

Benzene is produced as a side product when water react with phenyl magnesium bromide during Grignard reactions.

<h3>What is Grignard Reaction ? </h3>

The Grignard reaction involves an R-Mg-X, a carbon chain bound to a magnesium halide, used to form alcohols by attacking carbonyls such as in aldehydes or ketones.

Here R act as a nucleophile and Mg-X act as a electrophile. Instead of attacking carbonyl, which is present in the reaction, the benzene ring will attack water molecules present around, grabbing a H⁺ and pushing away MgBr .

The required reaction is :

PhMgBr + H₂O → Ph-H + MgBrOH

Thus from the above conclusion we can say that it is always advised to use dry Grignard to avoid this reaction.

Learn more about the GRIGNARD REACTION here :

brainly.com/question/23971610

#SPJ4

4 0

1 year ago

Describe the sunlight and length of day at the start of winter *NO GO OG LE* will give brainliest

natta225 [31]

Answer:

Although the daytime length at the Equator remains 12 hours in all seasons, the duration at all other latitudes varies with the seasons. During the winter, daytime lasts shorter than 12 hours; during the summer, it lasts longer than 12 hours.

Explanation:

Maybe this answer is hopeful in your homework.

7 0

3 years ago