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Volume of vapor generated after reaction of oxygen and hydrogen

작성자 Uploader : 물리화학 작성일 Upload Date: 2018-09-17변경일 Update Date: 2018-09-20조회수 View : 317

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Volume of vapor generated after reaction of oxygen and hydrogen

Volume of hydrogen gas : VH (liter)
Volume of oxygen gas : VO (liter)

■ Reaction equation

2H2 + O2 = 2H2O

Reaction of two molecules of hydrogen and one molecule of oxygen소 makes two molecules of water.

(Ratio of volumes of hydrogen gas and oxygen gas is 2 : 1.)


■ Total volume of gases : VT = VH + VO


■ if volume of hydrogen is less than twice the volume of oxygen (VH ≤ 2VO), all of hydrogen is used.

▶ VH2O : Volume of vapor after reaction (liter)




▶ VOa : Volume of remaining oxygen after reaction (liter)


■  if volume of hydrogen is larger than twice the volume of oxygen (VH ≥ 2VO), all of hydrogen is used.

▶ VH2O : Volume of vapor after reaction (liter)




▶ VHa : Volume of remaining hydrogen (liter)


※ In equation No.3, if VOa > 0, excess of oxygen remains after reaction.
※ In equation No.5, if VHa > 0, excess of hydrogen remains after reaction.
※ If VOa = VHa = 0, complete reaction.
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