TERMIUM Plus®

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HYDROGEN-TO-CARBON RATIO [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2003-02-06

English

Subject field(s)
  • Analytical Chemistry
  • Environmental Studies and Analyses
DEF

The relationship of hydrogen to carbon usually as atomic ratio, such that H/C for methane, CH4, is 4.

CONT

The gas chromatograph could not be used to quantify water and heavy hydrocarbons. Therefore, we used the hydrogen-to-carbon (H/C) ratio to obtain an atom balance and approximate a mass balance.

CONT

The driving force in substitutions between primary energies is twofold. On one hand we have the economies of scale involved in the technology and distribution infrastructures of each energy source. On the other hand we have the fact that during the last 200 years, the fuel mix of the world's primary energy sources has evolved toward "lighter" forms, i.e., fuel forms richer in hydrogen. The hydrogen/carbon (H/C) ratio increased from wood (H/C =0.1) to coal (H/C=1) to oil (H/C=2) to natural gas (H/C=4).

OBS

H/C: This might be an in-house or a non-recognized abbreviation; not to be used alone, to avoid any risk of confusion.

Key term(s)
  • hydrogen/carbon atomic ratio

French

Domaine(s)
  • Chimie analytique
  • Études et analyses environnementales
DEF

Rapport atomique entre le carbone et l'hydrogène.

CONT

[...] le rapport carbone/hydrogène dans toutes les planètes géantes et, semble-t-il, le rapport azote/hydrogène dans Jupiter et Saturne sont plus élevés que dans le Soleil.

CONT

La lutte contre la pollution passe par des motorisations un peu nouvelles comme les hybrides, ces moteurs avec une composante électrique variable. [...] Le gaz naturel semble [...] prometteur; sa formule chimique CH4 lui confère un bon rapport carbone/hydrogène, favorable à la lutte contre l'effet de serre, mais il se heurte aujourd'hui à des problèmes de stockage et de distribution.

CONT

Recours à des combustibles de substitution (abaissement du rapport carbone/hydrogène (C/H), énergies renouvelables) [...]

OBS

C/H : abréviation non officielle; ne pas l'utiliser seule, pour éviter tout risque de confusion.

Key term(s)
  • rapport atomique carbone/hydrogène

Spanish

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