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3 years ago

According to the kinetic molecular theory particles of matter

Chemistry

1 answer:

DiKsa [7]3 years ago

4 0

Answer:

The kinetic molecular theory of matter states that: Matter is made up of particles that are constantly moving. ... Molecules in the solid phase have the least amount of energy, while gas particles have the greatest amount of energy. The temperature of a substance is a measure of the average kinetic energy of the particles.

Explanation:

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Consider the following reaction at a high temperature. Br2(g) ⇆ 2Br(g) When 1.35 moles of Br2 are put in a 0.780−L flask, 3.60 p

UNO [17]

Answer : The equilibrium constant $K_c$ for the reaction is, 0.1133

Explanation :

First we have to calculate the concentration of $Br_2$ .

$\text{Concentration of }Br_2=\frac{\text{Moles of }Br_2}{\text{Volume of solution}}$

$\text{Concentration of }Br_2=\frac{1.35moles}{0.780L}=1.731M$

Now we have to calculate the dissociated concentration of $Br_2$ .

The balanced equilibrium reaction is,

$Br_2(g)\rightleftharpoons 2Br(aq)$

Initial conc. 1.731 M 0

At eqm. conc. (1.731-x) (2x) M

As we are given,

The percent of dissociation of $Br_2$ = $\alpha$ = 1.2 %

So, the dissociate concentration of $Br_2$ = $C\alpha=1.731M\times \frac{1.2}{100}=0.2077M$

The value of x = 0.2077 M

Now we have to calculate the concentration of $Br_2\text{ and }Br$ at equilibrium.

Concentration of $Br_2$ = 1.731 - x = 1.731 - 0.2077 = 1.5233 M

Concentration of $Br$ = 2x = 2 × 0.2077 = 0.4154 M

Now we have to calculate the equilibrium constant for the reaction.

The expression of equilibrium constant for the reaction will be :

$K_c=\frac{[Br]^2}{[Br_2]}$

Now put all the values in this expression, we get :

$K_c=\frac{(0.4154)^2}{1.5233}=0.1133$

Therefore, the equilibrium constant $K_c$ for the reaction is, 0.1133

7 0

3 years ago

In the equation Zn+2HCL ---->ZnCl2 + H 2 the reactants are

Oduvanchick [21]

Zn and HCl are the reactant in the equation above. zinc react with 2 moles of Hcl to form zinc chloride and a hydrogen molecule. The one equation means that the reaction proceed to the forward side only therefore no reverse of the reaction.

4 0

4 years ago

What is the oxidation state of the underlined atom in the reaction:

kvasek [131]

Answer:

Explanation:

Let's consider the following balanced equation.

Mn(NO₃)₂ + 2 HCl --> MnCl₂ + 2 HNO₃

We can determine the oxidation number of N in (NO₃)₂²⁻ taking into account that the sum of the oxidation numbers of the elements present in a chemical species is equal to this overall charge. For this compound we know:

The oxidation number of O is -2.
The overall charge is 2-.
We have 2 atoms of N and 2× 3 = 6 atoms of O.

2 N + 6 O = 2-

2 N + 6 (-2) = 2-

2 N = +10

N = +5

6 0

3 years ago

2. A copper wire can conduct electricity whether the wire is

Stells [14]

Answer:

Intensive

Explanation:

The electrical conductivity of a wire depends on its composition, not the length of the wire.

Hope this helps! If correct pls mark brainliest :)

7 0

3 years ago

Convert 23.92inHg to Pa.

andriy [413]

Answer:

3189.07Pa

Explanation:

The conversion of 23.92mmH to Pa can be achieved in the following way:

760mmHg = 101325Pa

23.92mmHg = (23.92x101325)/760 = 3189.07Pa

5 0

3 years ago

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