The percentage composition of carbon by mole in methane is:
(A) 80% (B) 20%
(C)75% (D) 25%
Answers
The percentage composition of carbon by mole in methane is 20% hence option (b) is correct choice.
The percentage composition of carbon by mole in methane is..
(a) 80% (b) 20% (c) 75 % (d) 25%
- The molecule formula of methane is CH₄.
- one mole of methane molecule contains one mole of carbon and four moles of hydrogen.
- number of mole of carbon in methane = 1
- number of moles of atom in a methane molecule = 1 + 4 = 5
Concept : percentage composition of an element by mole in a compound is given by,
= number of mole of element in the compound/total number of moles of atom in the compound × 100
∴ Percentage composition of carbon by mole in methane = 1/5 × 100 = 20%.
[ note : Don't confuse with percentage composition by mass and by mole. percentage composition by mass is found by mass of element/mass of compound × 100. and by this way, percentage composition of carbon in methane would be 12g/16g × 100 = 75%. ]
Also read similar questions : How many moles of methane are required to product 22 grams carbon dioxide after combustion?
https://brainly.in/question/3688880
5.6 liters of methane gas is ignited in oxygen gas calculate the number of moles of carbon dioxide produced
https://brainly.in/question/862564