Question

The volume of Co2, obtained (at STP) by the
complete combustion of 24 g of methane gas is
(1) 22.4 L
(2) 33.6 L
(3) 44.8 L
(4) 11.2 L​

Answer 1

Answer:

2.24L is your answer

it will help you

Answer 2

The volume of CO₂ obtained is 33.6 L. (Option 2)

Given,

Mass of methane gas combusted = 24 g

To Find,

The volume of CO₂ obtained

Solution,

The general chemical equation for combustion hydrocarbons is given as

CₓHy + (x + $\frac{y}{4}$)O₂ → xCO₂ + ($\frac{y}{2}$)H₂O

Since we have CH₄

x = 1 and y = 4

Writing the equation for methane, we get

CH₄ + 2O₂ → CO₂ + 2H₂O

From 1 mole of CH₄, we get 1 mole of CO₂

We have been given 24 g of CH₄

The molar mass of CH₄ = 12 + 4*1 = 16

Moles of CH₄ = $\frac{24}{16}$

Moles of CH₄ = 1.5 mol

Thus, moles of CO₂ are also 1.5 mol

At STP, 1 mole of a substance has a 22.4 L volume.

The volume of CO₂ = 1.5 x 22.4

The volume of CO₂ = 33.6 L

Thus, the volume comes out to be 33.6 L.

#SPJ3