Chemie Berechnung?
Hallo,
ich soll eine Aufgabe berechnen, weiß aber nicht wie. Die Frage lautet wie folgt:
Berechne das Volumen Wasserstoff in Liter sowie die Masse an festem Reaktionsprodukt in Gramm, das maximal unter Normalbedingungen besteht, wenn 1 Kubikmeter Methan-Gas zu türkisem Wasserstoff umgesetzt wird.
Haha you’re lucky I also had the same task XD
The reaction equation is:
CH4 (methane) + 2H2O (hydrogen) -> CO2 (carbon dioxide) + 4H2 (hydrogen)
This shows that four molecules of hydrogen are formed from one molecule of methane.
In view of the given amount of 1 cubic meter of methane gas, we must first determine the number of molecules methane. For this purpose, we use the molar volume of gases under normal conditions (0° C. and 1 atmosphere pressure), which is about 22.4 liters per mole.
1 cubic meter of methane correspond to 1000 liters. To calculate the volume in mol, we divide the volume by the molar volume:
1000 liters / 22.4 liters/mol ≅ 44.64 mol methane
Since four molecules of hydrogen are formed from one molecule of methane, 44.64 moles of methane are reacted to 4*44.64=178,56 moles of hydrogen.
The volume of hydrogen formed under normal conditions can also be calculated with the molar volume of gases:
Volume hydrogen = number of moles * molar volume
Volume hydrogen = 178,56 mol * 22.4 liter/mol ≅ 3993.98 liter ≅ 3994 liter
Now to calculate the mass of the solid reaction product (carbon dioxide), which is produced when the methane is completely reacted.
The molar mass of carbon dioxide (CO2) is about 44.01 g/mol. Since one mole of carbon dioxide is formed per mole of methane, the mass of the carbon dioxide results as follows:
Mass Carbon dioxide = number of moles of carbon dioxide * molar mass
Mass Carbon dioxide = 44.64 mol * 44.01 g/mol ≅ 1963.63 g ≅ 1964 g
Thus, a maximum of about 1964 grams (1,964 kilograms) of carbon dioxide are produced from the reaction of 1 cubic meter of methane to hydrogen.
Nice bill. Only a solid reaction product is required. Thus, CO2 and H2 as products cannot be.
Thank you for the detailed calculation.
https://www.google.com/search?q=t%C3%BCrkisem+hydrogen
So just set up the new equation and calculate exactly as described with SweetChantal.