Question

ОЧЕНЬ НАДО!!!При сгорании 13,44 л (н.у.) смеси монооксида углерода, метана и ацетилена образовалось 17,99 л СО2 (н.у.) и 9 г Н2О. Сколько литров каждого газа содержится в смеси?

Answer 1

1) В смеси х л CO, у л CH4 и z л C2H2, отсюда 1 равенство х+у+z = 13.44;

2) ур-я р-ий сгор-я комп-в смеси: а) CO + 0.5O2 = CO2, б) CH4 + 2O2 = CO2 + 2H2O (M = 18 г/моль) и в) C2H2 + 2.5O2 = 2CO2 + H2O, в соот-ии с кот-и, из х л CO пол-ся х л CO2, из у л CH4 - у л CO2, а из z л C2H2 - соот-но 2*z л CO2, отсюда 2 равенство х+у+2*z = 17.99;
из у л CH4 пол-ся соот-но (у*18*2)/22.4 = 1.607*у г H2O, а из z л C2H2 - соот-но (z*18)/22.4 = 0.804*z г H2O, отсюда 3 равенство 1.607*у+0.804*z = 9;
 
3) пол-ся система 3 равенств х+у+z = 13.44, х+у+2*z = 17.99 и 1.607*у+0.804*z = 9; 3 равенство сокр-м на минимум и пол-м 2*у+z = 11.2, откуда а) z = 11.2-2*y - подставив пол-е выр-е в 1 равенство, пол-м х-у = 2.24 или б) х = 2.24+у; наконец, подставив 3а) и 3б) во 2 равенство, нах-м, что у = 3.325 л, х = 5.565 л и z = 4.55 л;

4) в смеси 5.565 л CO, 3.325 л CH4 и 4.55 л C2H2.

Answer 2

Calculating Gas Volumes from Chemical Reaction

To calculate the volumes of each gas in the mixture, we can use the stoichiometry of the chemical reaction. The balanced chemical equation for the combustion of the mixture of carbon monoxide, methane, and acetylene can be represented as:

2CO + 5CH4 + C2H2 → 4CO2 + 6H2O

Given the volumes of carbon dioxide (CO2) and water (H2O) produced, we can use the stoichiometry of the reaction to find the volumes of each gas in the mixture.

Calculation

1. Calculate the Volume of Carbon Dioxide (CO2) Produced: - Given: 17.99 L CO2 - From the balanced chemical equation, 2 moles of CO produce 4 moles of CO2. - Using the molar volume of gases at standard conditions (22.4 L/mol), we can calculate the volume of CO produced.

2. Calculate the Volume of Water (H2O) Produced: - Given: 9 g H2O - Convert grams of H2O to moles using the molar mass of water. - Using the molar volume of gases at standard conditions (22.4 L/mol), we can calculate the volume of H2O produced.

3. Calculate the Volume of Each Gas in the Mixture: - Using the stoichiometry of the balanced chemical equation, we can determine the volumes of carbon monoxide (CO), methane (CH4), and acetylene (C2H2) in the mixture.

Conclusion

By following the steps outlined above, we can determine the volumes of each gas in the mixture based on the given information.