REGULAR QUIZZES - REGULAR TOPIC 12 Thermochemistry SET D
REGULAR Quizzes - REGULAR TOPIC 12 Thermochemistry SET D.
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QUESTION 1. Consider the reaction profiles below. Which of the reactions have endothermic activation energies?
(A) X only
(B) Y only
(C) Y and Z only
(D) X and Z only
(E) None of the above answers is correct
QUESTION 2. Consider the reaction profiles below. Which of the profiles represents the most exothermic reaction?
(A) X only
(B) Y only
(C) Z only
(D) Y and Z
(E) X and Z
QUESTION 3. Which of the following equations represents the standard enthalpy of formation for Aluminum Chloride?
(A) Al
(s)
+ 3Cl
(g)
==> AlCl
3(s)
(B) Al
(g)
+ 3Cl
(g)
==> AlCl
3(s)
(C) Al
(s)
+ 1.5 Cl
2(g)
==> AlCl
3(s)
(D) Al
(s)
+ Cl
2(s)
==> AlCl
3(s)
(E) Al
(g)
+ 1.5 Cl
2(g)
==> AlCl
3(s)
QUESTION 4. The enthalpy change associated with bringing the gaseous ions of an ionic compound together to form one mole of the ionic solid is better known as which of the following terms?
(A) Lattice Enthalpy
(B) Ionization Enthalpy
(C) Atomization Enthalpy
(D) Electron Affinity Enthalpy
(E) None of the Above
QUESTION 5. The standard enthalpies of formation for ethene (C
2
H
4
), water (H
2
O) and ethanol (C
2
H
5
OH) are +52, -286 and -277 kJmol
-1
respectively. Calculate Delta H for the reaction Ethene + Water ==> Ethanol
(A) +61
(B) -43
(C) -61
(D) -511
(E) -615
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