Chemistry Middle School

Which energy profile best shows that the enthalpy of formation of CS2 is 89.4 KJ/mol?

Which Energy Profile Best Shows That The Enthalpy Of Formation Of CS2 Is 89.4 KJ/mol?

Answers

Answer 1

Answer:

Option C. Energy Profile D

Explanation:

Data obtained from the question include:

Enthalpy change ΔH = 89.4 KJ/mol.

Enthalpy change (ΔH) is simply defined as the difference between the heat of product (Hp) and the heat of reactant (Hr). Mathematically, it is expressed as:

Enthalpy change (ΔH) = Heat of product (Hp) – Heat of reactant (Hr)

ΔH = Hp – Hr

Note: If the enthalpy change (ΔH) is positive, it means that the product has a higher heat content than the reactant.

If the enthalpy change (ΔH) is negative, it means that the reactant has a higher heat content than the product.

Now, considering the question given, the enthalpy change (ΔH) is 89.4 KJ/mol and it is a positive number indicating that the heat content of the product is higher than the heat content of the reactant.

Therefore, Energy Profile D satisfy the enthalpy change (ΔH) for the formation of CS2 as it indicates that the heat content of product is higher than the heat content of the reactant.

Answer 2
The correct answer is Option C

Related Questions

Help PLZ!!! Which statement accurately represents the arrangement of electrons in Bohr’s atomic model? -Electrons move around the nucleus in fixed orbits of equal levels of energy. -Electrons move around the nucleus in fixed orbits of increasing levels of energy. -Electrons move randomly in the relatively large space surrounding the nucleus. -Electrons vibrate in fixed locations around the nucleus.

Answers

Answer:

electrons move around the nucleus in fixed orbits of equal amounts of energy

Explanation:

To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. The correct option is option B.

What is atom?

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.

In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron.

According to Bohr’s atomic model,  electrons move around the nucleus in fixed orbits of increasing levels of energy.

Therefore, the correct option is option B that is electrons move around the nucleus in fixed orbits of increasing levels of energy.

To know more about atom, here:

https://brainly.com/question/13518322

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Consider the reaction below.
NH4 + H20 - NH3 + H30"
Which is an acid-conjugate base pair?
O NHA and NH3
O NH4" and H30*
O H20 and NH3
O H20 and H20"

Answers

Answer:

The correct ans is....

Option B) NH4" and H30*

Explanation:

NH4" and H30* is an example of conjugate pair

Hope this helps....

                              Pls mark my ans as brainliest :)PLS, PLS, PLS  

The acid-conjugate base pair : ( B ) NH₄⁺ and H₃O⁻

The chemical reaction is

NH₄ + H₂O --> NH₃ + H₃O

Acid-conjugate base pair

An acid-conjugate base pair is a pair that consists of two substances that are different from each other just by the presence or absence of a proton ( H⁺ ) it helps to determine the relative strengths of acids and bases.

Hence we can conclude that the acid-conjugate base pair : ( B ) NH₄⁺ and H₃O⁻.

Learn more about acid-conjugate : https://brainly.com/question/22390063

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