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18. If 5.0 grams of lead and 1.0 grams of sulfur are reacted according to the equation above, what will be left in measurable amounts in the reaction vessel?

18. If 5.0 grams of lead and 1.0 grams of sulfur are reacted according to the equation above, what will be left in measurable amounts in the reaction vessel?

Chemistry: An Atoms First Approach
Chemistry: An Atoms First Approach
2nd Edition
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Steven S. Zumdahl, Susan A. Zumdahl
Chapter7: Chemical Energy
Section: Chapter Questions
Problem 93AE: Three gas-phase reactions were run in a constant-pressure piston apparatus as shown in the following...
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The synthesis of solid lead (II) sulfide can be expressed in the equation Pb(s) + S(s) → PbS(s) AH° = - 98.7 kJ/mole Pb(s) → Pb(g) AH° (1) Pb(g) → Pb*2(g) + 2 e! AH° (2) S(s) → S(g) AH° (3) S(g) + 2 e1 → s'(g) AH° (4) Pb*(g) + s?(g) → PbS(s) AH° (5) 18. If 5.0 grams of lead and 1.0 grams of sulfur are reacted according to the equation above, what will be left in measurable amounts in the reaction vessel? (A) Lead and lead sulfide only. (B) Lead sulfide and sulfur only. (C) Lead sulfide only. (D) Lead sulfide, lead, and sulfur. 19. Which of the following will have the same numerical value as the lattice energy? (A) ΔΗ (1 ) + ΔΗ (2) (B) AH°(3) (C) AH°(4) (D) AH°(5)
Transcribed Image Text:The synthesis of solid lead (II) sulfide can be expressed in the equation Pb(s) + S(s) → PbS(s) AH° = - 98.7 kJ/mole Pb(s) → Pb(g) AH° (1) Pb(g) → Pb*2(g) + 2 e! AH° (2) S(s) → S(g) AH° (3) S(g) + 2 e1 → s'(g) AH° (4) Pb*(g) + s?(g) → PbS(s) AH° (5) 18. If 5.0 grams of lead and 1.0 grams of sulfur are reacted according to the equation above, what will be left in measurable amounts in the reaction vessel? (A) Lead and lead sulfide only. (B) Lead sulfide and sulfur only. (C) Lead sulfide only. (D) Lead sulfide, lead, and sulfur. 19. Which of the following will have the same numerical value as the lattice energy? (A) ΔΗ (1 ) + ΔΗ (2) (B) AH°(3) (C) AH°(4) (D) AH°(5)
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