Methane burns in oxygen to form $C O_{2}$ and $H_{2} O$ . Write a balanced equation for the reaction and calculate: (i) How much amount of $C O_{2}$ and $H_{2} O$ are formed when 8 g of methane reacts with oxygen? (ii) Which is the limiting reagent when the above amount of methane reacts with 29 g of $O_{2}$ ?

Open in App

Solution

16g of methane reacMethane burns in oxygen to form carbon dioxide and water.
$C H_{4}$ + $2 O_{2}$ $⟶$ $C O_{2}$ + $2 H_{2} O$
$CH_4$ (i) Molar mass of $C H_{4}$ $CH_4$ is 12+ $1×1\times$ 4=16g
Molar mass of $C O_{2}$ is 12+16 $×\times$ 2=44g
Molar mass of $H_2O$ $H_{2} O$ is 1 $×\times$ 2+16 = 18g
Molar mass of $O_2$ $O_{2}$ is 2 $×\times$ 16 = 32g
According to the balanced chemical equation,
1 mole of methane reacts with 2 mole of oxygen to form 1 mole of carbon dioxide and 2 moles of water.
no. of moles = $\frac{g i v e n m a s s}{m o l a r m a s s}$
no. of moles of methane = $\frac{8}{16}$ =0.5
So 0.5 moles of methane give 0.5 moles of carbon dioxide and 1 mole of water
Amount of methane = 0.5 $\times$ 16 = 8g
Amount of carbon dioxide = 0.5 $\times$ 44 = 22g
Amount of water = 18 $\times$ 1 = 18g
(ii) As per the equation, 16g of methane reacts with 64g of oxygen to form 44g of carbon dioxide and 32g of water.
Hence 8g of methane reacts with 32g of oxygen only. But the given amount of oxygen is 29g. So oxygen acts as a limiting reagent.

Suggest Corrections

Similar questions

Q. We allow

32.0

g of methane (

C H_{4}

) to react as completely as possible with excess of

O_{2}

to form

C O_{2}

and

H_{2} O

. How many moles of

O_{2}

will react?

Q. Calculate mass of oxygen required to burn

1.6

g of methane to form

C O_{2}

and water.

Q. (a) What are the products obtained when methane reacts with chlorine in diffused sunlight?
(b) Write equations for the above reactions.
(c) Name and define the type of above reaction.

Write the names and the formula of the products formed when :
(a) methane, (b) ethane,
reacts with : (i) chlorine (ii) bromine
Write the chemical equations.

Q. The amount of carbon dioxide produced when 40 g of methane reacts with 48 g of oxygen is.

Join BYJU'S Learning Program

Methane burns in oxygen to form CO2 and H2O. Write a balanced equation for the reaction and calculate: (i) How much amount of CO2 and H2O are formed when 8 g of methane reacts with oxygen? (ii) Which is the limiting reagent when the above amount of methane reacts with 29 g of O2?