Calculate Change in Enthalpy

Quiz
•
Chemistry
•
11th Grade
•
Hard
Standards-aligned
Charles Martinez
FREE Resource
11 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The standard enthalpy change for the combustion of graphite is −393.5 kJ/mol and that of diamond is −395.4 kJ/mol.
What is the standard enthalpy change for the reaction below, in kJ/mol?
C (s, graphite) → C (s, diamond)
−1.9
+1.9
−788.9
+788.9
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Consider the following bond enthalpy values.
O−O = +146 kJ/mol
O−H = +463 kJ/mol
O=O = +496 kJ/mol
For the reaction
H−O−O−H (g) → H−O−H (g) + ½O=O (g)
the enthalpy change, in kJ/mol, is ...
−102
+102
+350
+394
Tags
NGSS.HS-PS1-4
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Using the data in the table below, calculate the standard enthalpy change, in kJ/mol, for the reaction between carbon disulfide, CS2, and oxygen shown in the following equation.
CS2 (g) + 3O2 (g) → CO2 (g) + 2SO2 (g)
−570
−790
−860
−1080
Tags
NGSS.HS-PS1-4
NGSS.HS-PS3-1
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Consider the following information of bond energy:
H−H = +436 kJ/mol
I−I = +151 kJ/mol
H−I = +299 kJ/mol
For the reaction:
H2 (g) + I2 (g) → 2HI (g)
the enthalpy change, in kJ/mol is...
+288
+144
−11
−5.5
Tags
NGSS.HS-PS1-4
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The standard enthalpy changes of formation of carbon dioxide and of methanoic acid are −394 kJ/mol and −409 kJ/mol respectively. Calculate the enthalpy change for the reaction
H2 (g) + CO2 (g) → HCOOH (l)
−803 kJ/mol
−15 kJ/mol
+803 kJ/mol
+15 kJ/mol
Tags
NGSS.HS-PS1-4
NGSS.HS-PS3-1
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The enthalpy change for the reaction between hydrochloric acid and sodium hydroxide is −56 kJ/mol. Therefore ...
the reaction is exothermic and the temperature rises
the reaction is exothermic and the temperature falls
the reaction is endothermic and the temperature rises
the reaction is endothermic and the temperature falls
Tags
NGSS.HS-PS1-4
NGSS.HS-PS3-4
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which of these diagram correctly represent an endothermic reaction?
Tags
NGSS.HS-PS1-4
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