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Elan Coil [88]
3 years ago
5

Using this reversible reaction, answer the following:

Chemistry
2 answers:
spin [16.1K]3 years ago
4 0
<span>-Products formed by the forward 
reaction may react with each other to regenerate the reactants. 
-When reactants are mixed, they will begin to react at a forward reaction rate particular to that chemical reaction. 
- As reactants are depleted and products are formed, however, the rate of the forward reaction begins to slow, and the rate of the reverse reaction begins to increase.</span>
Mamont248 [21]3 years ago
4 0
<h2>Question 1.</h2><h3>Answer:</h3>

The concentration of [N2O4] will decrease.

<h3>Explanation:</h3>
  • As the reverse reaction which is the formation of N2O4 is an exothermic reaction and the formation of NO2 is an endothermic reaction.
  • Hence heating will favor the forward reaction and stops the reverse reaction.
  • N2O4 --> 2NO2
  • So the concentration of N2O4 decreases.
<h2>Question: 2.</h2><h3>Answer:</h3>

The formation of the products is favored by the addition of heat.

<h3>Explanation:</h3>
  • As the reverse reaction which is the formation of N2O4 is an exothermic reaction and the formation of NO2 is an endothermic reaction.
  • So the addition of heat will favor endothermic reaction.
  • Hence the formation of NO2 will be favored which is a product.
<h2>Question no.4:</h2><h3>Answer:</h3>

The reverse reaction is an exothermic reaction.

N2O4 <-- 2NO2.

<h3>Explanation:</h3>
  • N2O4 which is a reactant in this reaction is colorless compound.
  • Its breakdown absorbs energy and its formation release energy in form of heat.
  • So the reverse reaction which releases energy is an exothermic reaction.
<h2>Question no. 4</h2><h3>Answer:</h3>

The correct option is D which is N2O4 <--> 2NO2, HR = -14 kcal.

<h3>Explanation:</h3>
  • Enthalpy is the change in energy in reactants and products.
  • It is actually the difference in energies of products and reactant.
  • As the enthalpy change from left to right, it means reactants have internal energy 14 kcal high than products and it will be released.
  • And in option D which is shown as HR = -14 kcal.

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Need help on this question asap please
3241004551 [841]

Answer:

The correct answer is - 14.

Explanation:

In the given molecular formula of the aluminum sulphite which is Al2(SO3)3, this molecular formula there different type of elements are bonded together to form this compound each element has a specific number of atoms present. This compound has three elements that are aluminum, sulfur, and oxygen and the atoms are present are:

Al = 2 atoms represented by subscript

S = 3 atoms represented as whole subscripts of sulfite

O = 9 atoms 3 inside bracket and 3 outside of bracket that multiplies.

Thus, total number of atoms are 2+3+9 = 14

3 0
3 years ago
Precipitation reactions always occur when two aqueous solutions are mixed (T/F)
Studentka2010 [4]

Answer: The given statement is false.

Explanation:

Precipitation reaction is defined as the chemical reaction in which two aqueous solution upon mixing together results in the formation of an insoluble solid.

For example, NaCl(aq) + AgNO_{3} \rightarrow NaNO_{3}(aq) + AgCl(s)

Here AgCl is present in solid state so, it is the precipitate.

But it is not necessarily true that two aqueous solutions will always result in the formation of a precipitate.

For example, NaCl(aq) + KNO_{3}(aq) \rightarrow KCl(aq) + NaNO_{3}(aq)

Hence, we can conclude that the statement precipitation reactions always occur when two aqueous solutions are mixed, is false.

7 0
3 years ago
The cylinder of aluminum in class was approximately 13mm in circumference and 42mm in length. What would be it's approximate mas
Roman55 [17]

Answer:

Mass, m = 1.51 grams

Explanation:

It is given that,

The circumference of Aluminium cylinder, C = 13 mm = 1.3 cm

Length of the cylinder, h = 4.2 cm

We know that the density of the Aluminium is 2.7 g/cm³

Circumference, C = 2πr

r=\dfrac{C}{2\pi}\\\\r=\dfrac{1.3}{2\pi}\\\\r=0.206\ cm

Density is equal to mass per unit volume.

d=\dfrac{m}{V}

m is mass of the cylinder

V is the volume of the cylinder

V=\pi r^2h\\\\V=\dfrac{22}{7}\times0.206^2\times 4.2\\\\V=0.5601\ cm^3

So,

m=d\times V\\\\m=2.7\times 0.5601\\\\m=1.51\ g

So, the mass of the cylinder is 1.51 grams.

5 0
3 years ago
 The atom fluorine generally will become _____ stable through the formation of an ionic chemical compound by accepting _______ e
larisa86 [58]

The atomic number of Fluorine is 9

Valence (outer) electron configuration is : 2s²2p⁵

Therefore, it requires 1 electron in the p-orbital to complete its octet of 8 electrons.

Thus, the atom Fluorine generally will become <u>more </u>stable through the formation of an ionic chemical compound by accepting <u>1 </u> electron from another atom. This process will fill its outer energy level.

Ans:  A) more, 1

3 0
3 years ago
Read 2 more answers
How does the chemical formula for the nitrite ion differ from the chemical formula for the nitrate ion?
Darina [25.2K]
The nitrite ion has one less oxygen than the nitrate ion. Nitrate is NO3-1 while the nitrite ion is NO2-.
8 0
3 years ago
Read 2 more answers
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