O-LevelChemistryStoichiometry5070/12 · May/June 2015 · Q161 Mark
Hydrogen reacts with iodine to form hydrogen iodide. This is a slow reaction. H₂(g) + I₂(g) ⇌ 2HI(g) 1 mole of hydrogen gas and 1 mole of iodine vapour were mixed and allowed to react. After t seconds, 0.6 moles of hydrogen remained. What is the number of moles of iodine remaining after t seconds?
A0.0
B0.4
C0.6
D1.0
✓ Correct answer
C: 0.6
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