Enthalpy of Reaction

Quiz
•
Chemistry
•
5th Grade
•
Hard
+1
Standards-aligned
Charles Martinez
FREE Resource
11 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
How do you calculate Enthalpy of a reaction?
ΔH = ΔHproducts - ΔHreactants
ΔT = q / mC
ΔG = ΔH -TΔS
E = mc2
Tags
NGSS.HS-PS3-1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Define standard enthalpy of combustion.
Heat released when one mole of substance is burnt completely in excess oxygen.
Heat absorbed when one mole of substance is burnt completely in excess oxygen under standard state.
Heat released when one mole of substance is burnt completely in excess oxygen under standard state.
Heat change when one mole of substance is burnt partially in excess oxygen under standard state.
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following has a ΔHfo value of 0?
Br2(g)
N(g)
CO(g)
Ne(g)
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the equation below refers to the standard enthalpy of formation, ΔHfo?
Na(g) ---> Na+(g) + e- ΔH = -364 kJmol-1
C2H5OH(l) + 3O2(g) ---> 2CO2(g) + 3H2O (l) ΔH = - 1286 kJmol-1
2C(s) + 2H2(g) ---> C2H4 (g) ΔH = - 52.3 kJmol-1
Na+(g) ---> Na+(aq) ΔH = - 364 kJmol-1
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
When 1.0 mole of ZnO(s) decomposes,
ZnO(s) ---> Zn(s) + 1/2 O2(g) , enthalpy change is +348 kJ/mol.
What does this tell you about the formation of ZnO (s)?
the formation of ZnO (s) is endothermic
the formation of ZnO (s) is exothermic
the formation of ZnO (s) does not require energy
the formation of ZnO (s) absorbs heat.
Tags
NGSS.HS-PS1-4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tags
NGSS.HS-PS1-4
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
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