Given the following data: ΔH ○ f [FeO(s)] = –270kJmol –1 ΔH ○ f [Fe 2 O 3 (s)] = –820 kJ mol –1 S elect the expression which gives the enthalpy change, in kJ mol –1 , for the reaction: 2FeO(s) + 1⁄2O 2 (g) → Fe 2 O 3 (s)

(–820 × 1⁄2) + 270 = –140

C 2 H 4 (g) + H 2 (g) -> C 2 H 6 (g) ∆H°=-137 kJ mol -1 Which statement about this information is correct?

The total energy of the bonds broken in the reactants is less than the total energy of the bonds formed in the product

The total energy of the bonds broken in the reactants is greater than the total energy of the bonds formed in the product

The bonds broken and the bonds made are of the same strength

No conclusion can be made about the sums of the bond enthalpies in the product compared with the reactants

Thermochemical Enthalpy

Quiz

•

Science

•

11th - 12th Grade

•

Practice Problem

•

Hard

•

NGSS

HS-PS1-4, HS-PS3-1, HS-PS3-4

+1

Standards-aligned

Charles Martinez

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

ΔH is the same thing as:

temperature

q

m

C

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

ΔH means:

temperature

calorimetry

enthalpy

syntropy

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A positive ΔH means the reaction is:

complete

at equilibrium

exothermic

endothermic

Tags

NGSS.HS-PS1-4

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A positive ΔH means that:

In order for the reaction to happen, heat must be input. It is exothermic

In order for the reaction to happen, heat must be input. It is endothermic.

When the reaction happens, heat is released. It is exothermic

When the reaction happens, heat is released. It is endothermic

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If ΔH is positive, heat would be shown on the _____ side of the thermochemical equation.

Reactant

Product

Tags

NGSS.HS-PS1-4

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What type of reaction is shown in the reaction pathway?

endothermic reaction

exothermic reaction

Tags

NGSS.HS-PS1-4

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Is the following exothermic or endothermic?

Endothermic

Exothermic

Tags

NGSS.HS-PS1-4

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Thermochemical Enthalpy

20 questions

ΔH is the same thing as:

ΔH means:

A positive ΔH means the reaction is:

A positive ΔH means that:

If ΔH is positive, heat would be shown on the _____ side of the thermochemical equation.

What type of reaction is shown in the reaction pathway?

Is the following exothermic or endothermic?

Is the following exothermic or endothermic?

C+ O₂ --> CO₂ + 60kJ, what is the value for ΔH for the reaction?

Calculate ΔH when 2 moles of ethanol (C₂H₅OH) reacts with excess oxygen according to the following thermochemical equation?
C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O ΔH = −1366.7 kJ

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Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science

Thermochemical Enthalpy

20 questions

ΔH is the same thing as:

ΔH means:

A positive ΔH means the reaction is:

A positive ΔH means that:

If ΔH is positive, heat would be shown on the _____ side of the thermochemical equation.

What type of reaction is shown in the reaction pathway?

Is the following exothermic or endothermic?

Is the following exothermic or endothermic?

C+ O2 --> CO2 + 60kJ, what is the value for ΔH for the reaction?

Calculate ΔH when 2 moles of ethanol (C2H5OH) reacts with excess oxygen according to the following thermochemical equation?C2H5OH + 3O2 → 2CO2 + 3H2O ΔH = −1366.7 kJ

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science

C+ O₂ --> CO₂ + 60kJ, what is the value for ΔH for the reaction?

Calculate ΔH when 2 moles of ethanol (C₂H₅OH) reacts with excess oxygen according to the following thermochemical equation?
C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O ΔH = −1366.7 kJ