Question

Обчисліть об'єм кисню, що витратився на спалювання 1л пропану

Answer 1

C3H8+5O2=3CO2+4H2O
1моль 5моль
значит 5 л по закону объемных отношений

Answer 2

Calculating the Volume of Oxygen Consumed by Burning 1 Liter of Propane

To calculate the volume of oxygen consumed when burning 1 liter of propane, we can use the stoichiometry of the combustion reaction of propane.

The balanced chemical equation for the combustion of propane is:

C3H8 + 5O2 → 3CO2 + 4H2O

From the balanced equation, we can see that 5 moles of oxygen are required to burn 1 mole of propane.

Using the molar volume of gases at standard temperature and pressure (STP), which is 22.4 liters per mole, we can calculate the volume of oxygen required to burn 1 liter of propane.

The molar volume of oxygen at STP is 22.4 liters per mole.

Therefore, the volume of oxygen required to burn 1 liter of propane can be calculated as follows:

1. Calculate the moles of propane in 1 liter: - The molar mass of propane (C3H8) is 44.1 g/mol. - Convert 1 liter of propane to grams using its density, which is approximately 493 grams per liter. - Calculate the moles of propane in 1 liter.

2. Calculate the moles of oxygen required: - Use the stoichiometry of the combustion reaction to determine the moles of oxygen required to burn the moles of propane calculated in step 1.

3. Convert moles of oxygen to volume: - Use the molar volume of oxygen at STP to convert the moles of oxygen to liters.

Let's perform these calculations step by step.

Step 1: Calculate the Moles of Propane in 1 Liter

The molar mass of propane (C3H8) is 44.1 g/mol. The density of propane is approximately 493 grams per liter.

Using the density, we can calculate the moles of propane in 1 liter.

Step 2: Calculate the Moles of Oxygen Required

From the balanced chemical equation, we know that 1 mole of propane requires 5 moles of oxygen.

Step 3: Convert Moles of Oxygen to Volume

The molar volume of oxygen at STP is 22.4 liters per mole. We can use this value to convert the moles of oxygen to liters.

After performing these calculations, we can determine the volume of oxygen consumed when burning 1 liter of propane.