What volume of hydrogen would be left over when 300cm3 of oxygen and 1000cm of hydrogen are exploded in a sealed tube? [2H2(g) + O2(g) → 2H2 Og]

  • A 200 cm3
  • B 400 cm3
  • C 600cm3
  • D 700cm3
waec 2004chemistry

The correct answer is B. 400 cm3

2H2(g) + O 2(g) → 2H2Og

2V IV 2V

600cm3 300cm3 600cm3

The volume of hydrogen left over

= 1000 - 600 = 400cm3?

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