Formation Reactions

Define a Formation Reaction

1 pts

volume_mute

Which statement best defines a formation reaction?

Any reaction that releases heat.

A reaction that produces one mole of a substance from its constituent elements.

A reaction that breaks a compound into its elements.

A reaction between an acid and a base.

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volume_mute

Correct Answer

Explanation

Is It a Formation Reaction?

3 pts

volume_mute

Reaction

×Hg(ℓ) + ½O₂(g) → HgO(s)

×H₂(g) + S(s) + 2O₂(g) → H₂SO₄(ℓ)

×Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g)

×2HBr(g) + Cl₂(g) → 2HCl(g) + Br₂(ℓ)

×C₃H₈(g) + 5O₂(g) → 3CO₂(g) + 4H₂O(ℓ)

×H₂(g) + S(s) → H₂S(g)

Formation reaction

Not a formation reaction

Classify each reaction as a formation reaction or not.

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volume_mute

Correct Answer

Explanation

Correct Formation Reaction

1 pts

volume_mute

Which is the correct formation reaction for Na₂O(s)?

2Na(s) + O₂(g) → 2Na₂O(s)

2Na(s) + ½O₂(g) → Na₂O(s)

Na₂O(s) → 2Na(s) + ½O₂(g)

Na(s) + O₂(g) → Na₂O(s)

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volume_mute

Correct Answer

Explanation

Complete the Formation Reaction

3 pts

volume_mute

Drag the correct coefficient into each blank to give the formation reaction of H₃PO₄(s):
(1) H₂(g) + P(s) + (2) O₂(g) → H₃PO₄(s)

Please drag and drop the selected option in the right place or type it instead

3/2

2

4

1

5/2

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volume_mute

Correct Answer

Explanation

Enthalpy from Formation Data (1)

1 pts

volume_mute

Using formation enthalpies, determine ΔH for CH₂O(g) + O₂ → CO₂(g) + H₂O(ℓ).

−563.44 kJ

−1,127 kJ

+563.44 kJ

−281.7 kJ

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volume_mute

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Explanation

Enthalpy from Formation Data (2)

1 pts

volume_mute

Using formation enthalpies, determine ΔH for Mg(s) + N₂O₅(g) → MgO(s) + 2NO₂(g).

+546.7 kJ

−273.4 kJ

−1,093 kJ

−546.7 kJ

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volume_mute

Define a Formation Reaction

Correct Answer

Explanation

Is It a Formation Reaction?

Correct Answer

Explanation

Correct Formation Reaction

Correct Answer

Explanation

Complete the Formation Reaction

Correct Answer

Explanation

Enthalpy from Formation Data (1)

Correct Answer

Explanation

Enthalpy from Formation Data (2)

Correct Answer

Explanation

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