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
Brut [27]
3 years ago
14

A chemical reaction has a change in enthalpy of 1352 kJ/mol and a total bonding energy of the recants is 1546 kJ/mol. Calculate

the total bonding energy of the products and decide whether the reaction is endothermic or exothermic
A)84 kJ/mol, endothermic
B)194 kJ/mol, endothermic
C) 84 kJ/mol, exothermic
D)194 kJ/mol, exothermic
Chemistry
2 answers:
lisabon 2012 [21]3 years ago
4 0
Answer is: <span>D)194 kJ/mol, exothermic
</span>ΔHreaction = ∑(product bond energies) - ∑(reactant bond energies).
∑(product bond energies) = ΔHreaction + ∑(reactant bond energies).
ΔHreaction must be negative (exothermic) if ∑(product bond energies) is positive.
∑(product bond energies) = -1352 kJ/mol + <span>1546 kJ/mol.
</span>∑(product bond energies) = 194 kJ/mol.
∑ is summation.
daser333 [38]3 years ago
3 0

Answer: D) 194 kJ/mol, exothermic

Explanation:-

Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat and \Delta H for the reaction comes out to be negative.

Enthalpy change of the reaction is defined as the difference between the enthalpy change of the products and the enthalpy change of the reactants.

Mathematically,

\Delta H_{rxn}=H_{products}-H_{reactants}

For the given reaction:

\Delta H_{rxn}= 1352kJ/mol[/tex]

H_{reactants}=1546kJ/mol

-1352kJ/mol=H_{products}-1546kJ/mol

H_{products}=194kJ/mol

The reaction is exothermic as the energy of products is less than the energy of reactants and total bonding energy of the products is 194 kJ.

You might be interested in
George has a mass of 65kg. What would George weigh on the Moon? (The gravitational field strength on the Moon is 1.6N/kg.)
dem82 [27]

Answer:

\boxed{\large \text{104 N}}  

Explanation:

\text{Weight} = \text{65 kg} \times \dfrac{\text{1.6 N}}{\text{1 kg}} = \textbf{104 N}\\\\\text{George would weigh $\boxed{\large \textbf{104 N}}$ on the moon}

5 0
2 years ago
Read 2 more answers
What pressure will be exerted by 0.450 mol of a gas at 25°C if it is contained in a 0.650-L vessel?
iVinArrow [24]

Hey there!

The answer as well as the explanation is in the image attached. Let me know if there's anything you're unable to see.

Hope this helps!

5 0
3 years ago
The combination of all the forces on an object is called?
krek1111 [17]

Answer:

net force

Explanation:

6 0
3 years ago
If two atoms have an electronegativity difference of 1.3, what type of bond would form between them?
Debora [2.8K]

Answer:

The correct answer is b polar covalent

Explanation:

When two atoms joined by covalent bond has difference in their electronegativities at that time polarity arise.

    When the electronegativity difference is low such as 1.3 then the polar bond formed by the two atoms are called polar covalent bond.For example H2O

 on the other hand polar bond formed by two atoms having high difference in their electronegativities is called ionic bond.For example NaCl.

5 0
3 years ago
Read 2 more answers
WILL GIVE OUT BRAINLY
Margarita [4]

Answer:

3. An oxygen atom with 8 electrons, 8 protons, and 9 neutrons .

Explanation:

if an atom contains equal numbers of protons and electrons, the atom is described as being neutral.

4 0
3 years ago
Other questions:
  • Explain the process on how the conditions for lightning to strike occurs?
    15·1 answer
  • One difference between mixtures and pure substances is that
    8·2 answers
  • Types of atoms. The basic unit of matter. Pure substance is what?
    14·2 answers
  • Nuclear energy is released during:
    8·2 answers
  • 12. Draw an energy curve for a chemical reaction that begins at 30 kj and has an activation energy of
    12·1 answer
  • An atom has atomic number 20, in which group and in what period is this atom located?
    8·1 answer
  • How many protons does Tin have?<br>A. 50<br>B. 68<br>C. 118​
    10·1 answer
  • Explain in terms of atomic structure, why cesium has a lower first ionization energy than rubidium. Determine the family/group i
    10·1 answer
  • If the density of carbon tetrachloride is 0.893 g/mL, and a sample has a volume of 9.29 mL, what is the mass?
    11·1 answer
  • What is the correct formula of a compound that has ten oxygen atoms and four phosporus atoms?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!