Molare Masse?

Hallo,

Kann jemand mir bitte helfen? ich kann es nicht löse😥 aber bitte einfach

Berechne mit wie viel Liter Kohlenstoffdioxid die Atmosphäre belastet wird, wenn ein Liter Ethanol verbrannt wird. Die Dichte von Ethanol beträgt 789,3 kg pro Kubikmeter und die Dichte von Kohlenstoffdioxid beträgt 1,977 kg pro Kubikmeter und ein Liter gleich 1000 Kubikzentimeter

bitte Hilfe ich muss es abgeben

Danke

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iF3lix
2 years ago

What is the reaction equation?

How much kilo is a liter of ethanol?

How much mol of ethanol are burned?

How much mol of CO2 are produced by one mol of ethanol during the decomposition?

How much mol in the concrete combustion of 1 liter of ethanol?

How much kilo CO2 are generated?

How much liter is that?

iF3lix
2 years ago
Reply to  Hagar490

Again right – and now on, the questions should help you as a guideline.

iF3lix
2 years ago

Yes, the question was how much liter of CO2. The result is 0.763 cubic meters, which is 763 litres.

iF3lix
2 years ago

This is the density of CO2 you mentioned

iF3lix
2 years ago

*seufzt* and don’t pay me, thank you

What is the reaction equation?

1 C2H5OH + 3 O2 –> 3 H2O + 2 CO2

How much kilo is a liter of ethanol?

1 l = 0,001 m^3

0,001 m3 * 789.3 kg/m3 = 0,7893 kg = 789.3 g

How much mol of ethanol are burned?

Molar mass of ethanol (see and add the atomic weights of the individual elements – value of the atomic weights corresponds to the molar mass): 46.07 g/mol

g : 46.07 g/mol = 17.133 mol

How much mol of CO2 are produced in the combustion of one mol of ethanol?

In the reaction equation: 2 mol

How much mol in the concrete combustion of 1 liter of ethanol?

2*17.133 mol=34.266 mol

How much kilo CO2 are generated?

Molar mass of CO2: 44.01 g/mol

44.01 g/mol * 34.266 mol = 1,508.047 g = 1,508 kg

How much liter is that?

1,508 kg: 1,977 kg/m3 = 0,763 m3 = 763 l