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vkk rxt ez lk fxg ke bqyd

BFEM – Chimie 2016 : Etude du méthane

Petit Koldois 1 Min Read

Le méthane Formula est un gaz à effet de serre, responsable du réchauffement climatique. Le traitement des déchets enfouis permet de récupérer le méthane pour le brûler ou l’utiliser.

2.1 A quelle famille d’hydrocarbures appartient le méthane ? (0,5 point)

2.2 Écris la formule générale de cette famille. (0,5 point)

2.3 Écris l’équation bilan de la combustion complète du méthane. (0,5 point)

2.4 Calcule le volume de dioxygène nécessaire à la combustion complète de 320 g de méthane. (Le volume molaire est Formula . (1,5 point)

2.5 Trouve la masse de dioxyde de carbone formé après la combustion ? (1 point)

2.1 Il appartient à la famille des alcanes (0,5 point)

2.2 Formule générale Formula .(0,5 point.)

2.3 Equation bilan : Formula (0,5 point)

2.4 Volume de dioxygène nécessaire à la combustion de 320 g de méthane.

Formula (1,5 point).

2.5 Masse de dioxyde de carbone formé Formula (1 point)

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Petit Koldois 14 avril 2023

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