Question

how many grams of water will be produced by complete combustion of 12 gram of Methane Gas choose the correct option A 16 B 27 C 36d 56 ​

Answer 1

Answer: B) 27 g

Explanation:

$CH_4+2O_2\rightarrow CO_2+2H_2O$

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

$\text{Number of moles of methane}=\frac{12g}{16g/mol}=0.75moles$

According to stoichiometry :

1 mole of methane produces 2 moles of water

Thus 0.75 moles of methane produce=$\frac{2}{1}\times 0.75=1.5moles$ moles of water

Mass of water= $moles\times {\text {Molar Mass}}=1.5\times 18=27g$

Thus mass of water produced by complete combustion of 12 gram of methane gas is 27 grams.

Answer 2

Answer:

27 grams is correct