Standard Heat of Formation

Standard Heat of Formation

12th Grade

7 Qs

quiz-placeholder

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Standard Heat of Formation

Standard Heat of Formation

Assessment

Quiz

Chemistry

12th Grade

Hard

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

Standards-aligned

Created by

Charles Martinez

FREE Resource

7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

In an endothermic reaction, the sum of the heats of formation of the products are____than the sum of the heats of formation of the reactants. Hint: is ΔH + or -? This about how you calculate ΔH
less than
greater than
equal to

Tags

NGSS.HS-PS3-1

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

-393.5 kJ/mol

-566.0 kJ/mol

566.0 kJ/mol

-369 kJ/mol

Tags

NGSS.HS-PS1-4

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Which one of the following expressions is the correct way to calculate standard enthalpy change for the combustion of propane?

C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(l)

Use your heats of formation table for reference.

[103.85 + (5 × 286)] – [-393.5 + -285.8]

[-103.85 + 0] + [(3 x -393.5) + (4 x -285.8)]

[-103.85 + 0] – [(3 x -393.5) + (4 x -285.8)]

[(3 x -393.5) + (4 x -285.8)] + [-103.85 + 0]

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What is the heat of formation for 6 moles of ethanol? Use your heats of formation table for reference.

-1666.2 kJ/mol

-277.7 kJ/mol

52.3 kJ/mol

Only able to calculate in a reaction

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

-890.25 kJ/mol

-604.45 kJ/mol

-754.15 kJ/mol

No way to tell

Tags

NGSS.HS-PS1-4

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What is the heat of formation for 8 moles of ammonia? Use your heats of formation table for reference.

-369.52 kJ/mol

-46.19 kJ/mol

-92.38 kJ/mol

-102.4 kJ/mol

Tags

NGSS.HS-PS1-4

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Calculate the enthalpy of the following reaction:
Ca(OH)2 -> CaO + H2O
ΔHf in kJ/mol:  
      Ca(OH)2  -983.2
        CaO         -634.9
        H2O         -285.5
62.8 kJ
-62.8 kJ
-1840.6
1840.6

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1