Question

Який об'єм вуглекислого газу утвориться внаслідок спалювання 56 г етанолу?​

Answer 1

Який об'єм вуглекислого газу утвориться внаслідок спалювання 56 г етанолу?​

С2Н5ОН + 3О2 = 2СО2 + 3Н2О

молярна маса етанолу = 24+6+16 = 46 г/моль

кількість речовин етанолу = 56/46 = 1.2 моль

кількість речовин вуглекислого газу = 1.2*2 = 2.4 моль

об'єм = 2.4*22.4 = 53.04 л

Answer 2

Calculation of Carbon Dioxide Produced from Burning Ethanol

To calculate the volume of carbon dioxide (CO2) produced from burning 56 grams of ethanol (C2H5OH), we need to consider the balanced chemical equation for the combustion of ethanol:

C2H5OH + 3O2 -> 2CO2 + 3H2O

From the equation, we can see that for every mole of ethanol burned, 2 moles of carbon dioxide are produced. To determine the number of moles of ethanol in 56 grams, we need to know the molar mass of ethanol.

The molar mass of ethanol (C2H5OH) can be calculated by adding up the atomic masses of each element in the compound:

C: 12.01 g/mol H: 1.01 g/mol (there are 6 hydrogen atoms in ethanol) O: 16.00 g/mol

Molar mass of ethanol = (2 * 12.01) + (6 * 1.01) + 16.00 = 46.07 g/mol

Now, we can calculate the number of moles of ethanol in 56 grams:

Number of moles = Mass / Molar mass = 56 g / 46.07 g/mol ≈ 1.215 moles

Since 2 moles of carbon dioxide are produced for every mole of ethanol burned, we can calculate the number of moles of carbon dioxide produced:

Number of moles of CO2 = 2 * Number of moles of ethanol = 2 * 1.215 moles ≈ 2.43 moles

To convert the number of moles of carbon dioxide to volume, we need to know the molar volume of an ideal gas at standard temperature and pressure (STP), which is 22.4 liters/mol.

Volume of CO2 = Number of moles of CO2 * Molar volume = 2.43 moles * 22.4 liters/mol ≈ 54.43 liters

Therefore, approximately 54.43 liters of carbon dioxide gas will be produced from burning 56 grams of ethanol.

Please note that the above calculation assumes ideal conditions and may not account for all factors that could affect the actual volume of carbon dioxide produced.