1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aksik [14]
3 years ago
14

based on bond energies, what will be the heat of reaction for the formation of 2 moles of hydrogen fluoride from one mole each o

f hydrogen gas and fluorine gas?
Chemistry
1 answer:
juin [17]3 years ago
3 0

Answer:

ΔH₍reaction₎ = ΔH₍ hydrogen gas bond-breakage₎ + ΔH₍fluorine gas bond-breakage₎ + 2.ΔH₍hydrogen fluoride bond-formation₎ .

Explanation:

Reaction:

H₂ + F₂ --> 2.HF      ΔH₍reaction₎

In this reaction, bonds are broken in the hydrogen gas and fluorine gas molecules which then lead to the new bond formation, that is, bond between hydrogen and fluorine atoms which explains the formation of hydrogen fluoride.

ΔH₍reaction₎ = ΔH₍bond-breakage₎ + ΔH₍bond-formation₎

ΔH₍bond-breakage₎ is just ΔH₍ hydrogen gas bond-breakage₎ + ΔH₍fluorine gas bond-breakage₎.

ΔH₍bond-formation₎ is 2.ΔH₍hydrogen fluoride bond-formation₎ .Since the ΔH₍bond-formation₎ is in the units kJ/mol, a factor of 2 comes in the picture

Therefore,

ΔH₍reaction₎ = ΔH₍ hydrogen gas bond-breakage₎ + ΔH₍fluorine gas bond-breakage₎ + 2.ΔH₍hydrogen fluoride bond-formation₎ .

Note: Care should be taken while assigning opposite signs to ΔH₍bond-breakage₎ and ΔH₍bond-formation₎.

You might be interested in
How many CH4 molecules are in 14.8 g of CH4
murzikaleks [220]
1.8021•1024 molecules
8 0
2 years ago
Read 2 more answers
Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the
Vera_Pavlovna [14]

2NH₂ + O₂ → N₂ + 2H₂O

<u>Explanation:</u>

Balancing the equation means, the number of atoms on both sides of the equation must be the same.

In the case of the given equation, we have to find out whether it is balanced or not.

2NH₂ + O₂ →  N₂ + 2H₂O

Atoms       Number of atoms before balancing     after balancing

                 LHS                 RHS                                    LHS         RHS

N               1                        2                                            2              2

H               2                       2                                            4              4                        

O               2                       1                                            2                2

To balance the N atoms, we have to put 2 in front of NH₂, and then to balance the H, O atoms, we have to put 2 in front of H₂O, so that each atom in left hand as well as right hand side of the equation was balanced.

8 0
3 years ago
How many hydrogen atoms in the following chemical formula ? <br> NH4OH
djyliett [7]

Answer:

5

Explanation:

NH4OH

The subscript gives the info that there are 4 hydrogen atoms but there is another H in the formula so you add them up.

5 0
3 years ago
Which type of substance have a definite shape and fixed volume?
IRINA_888 [86]
The answer is A. Solids only
8 0
2 years ago
Read 2 more answers
How does the atomic arrangement of atoms lead to its crystal structure like was seen in the sample of bronze and gold and Timber
Margaret [11]
In mineralogy and crystallography, a crystal structure<span> is a unique </span>arrangement of atoms<span> in a </span>crystal. Atomic arrangement of atoms in this kind of structure usually very symmetrical and highly ordered. Causing the component within the structure is so strong and hard to break. <span>A </span>crystal structure<span> is composed of a unit cell, a set of </span>atoms arranged<span> in a particular way; which is periodically repeated in three dimensions on a lattice. </span>Crystal structure would be commonly found in solid compounds.

7 0
3 years ago
Other questions:
  • A substance that is dissolved in a solution is called a(n) __________________.
    5·2 answers
  • An atom of iron has the atomic number 26 and a mass number of 56. how many protons plus neutrons are in the nucleus?
    11·2 answers
  • Question 22 Write the empirical formula for at least four ionic compounds that could be formed from the following ions:
    10·1 answer
  • Which enthalpy change (î"h) is correct for a substance changing from the liquid phase to the solid phase?
    6·1 answer
  • Predict the species that will be oxidized first if the following mixture of molten salts undergoes electrolysis:
    11·1 answer
  • At 27.00 °c a gas has a volume of 6.00 L . What will the volume be at 150.0 °c
    7·1 answer
  • I NEED HELP ASAP!!!!!!<br> Which energy profile best shows that the delta Hf of H2S is -20.6 kJ/mol?
    6·1 answer
  • Trevor dissolves sodium hydroxide pellets in a beaker of water at room temperature, and notes that the beaker becomes warm. Whic
    9·2 answers
  • - Angel wants to know if the type of detergent has an effect on the cleanliness on her clothes. Hypothesis:​
    11·1 answer
  • An ideal gas at 20 degrees centigrade has a volume of 12 liters and a pressure of 15 atmospheres. Its temperature is raised to 3
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!