11) Sulfur and fluorine react in a combination reaction to produce sulfur hexafl
ID: 874415 • Letter: 1
Question
11) Sulfur and fluorine react in a combination reaction to produce sulfur hexafluoride: 11) S(s) + 3F2(g) SF6(g)
A 7.90-g sample of fluorine yields __________ g of SF6.
A) 10.1 B) 30.3 C) 24.0 D) 0.110
12) Pentacarbonyliron (Fe(CO)5) reacts with phosphorous trifluoride (PF3) and hydrogen, releasing 12) carbon monoxide:
Fe(CO)5 + PF3 + H2 Fe(CO)2(PF3)2(H)2 + CO (not balanced)
The reaction of 5.0 mol of Fe(CO)5, 8.0 mol of PF3 and 6.0 mol of H2 will release __________ mol of
CO.
A) 5.0 B) 15 C) 12 D) 6.0
13) The combustion of ammonia, NH3, in the presence of excess oxygen yields NO2 and H2O: 13) 4NH3(g) + 7O2(g) 4NO2(g) + 6H2O(g)
The combustion of 43.9 g of NH3 produces __________ g of NO2.
A) 2.58 B) 119 C) 178 D) 43.9
14) The combustion of propane (C3H8) produces CO2 and H2O: C3H8(g) + 5O2(g) 3CO2(g) + 4H2O (g)
The reaction of 2.5 mol of O2 with 4.6 mol of C3H8 will produce __________ mol of H2O. A) 4.0 B) 3.0 C) 2.5 D) 2.0
15) Calcium carbide (CaC2) reacts with water to produce acetylene (C2H2): CaC2 (s) + 2 H2O (g) Ca(OH)2 (s) + C2H2 (g)
The complete reaction of 57.4 g of CaC2 requires consumption of __________ g of H2O. A) 64.1 B) 1.79 C) 32.3 D) 18.0
16) Under appropriate conditions, nitrogen and hydrogen undergo a combination reaction to yield 16) ammonia:
N2(g) + 3H2(g) 2NH3(g)
A 7.1-g sample of N2 requires __________ g of H2 for complete reaction.
A) 1.2 B) 1.5
C) 0.76 D) 17.2
Explanation / Answer
11) Sulfur and fluorine react in a combination reaction to produce sulfur hexafluoride: 11) S(s) + 3F2(g)
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