What is the weight of CO having the same number of oxyg
![What is the weight of CO having the same number of oxyg](/img/relate-questions.png)
|
What is the weight of CO having the same number of oxygen atoms as much oxygen present in 88 g of CO2?
A.
112 g
B.
56 g
C.
84 g
D.
140 g
Please scroll down to see the correct answer and solution guide.
Right Answer is: A
SOLUTION
Molecular mass of CO2 = 44 g
88 g of CO2 = 2 moles of CO2
Also, 1 mole of CO2 → 6.022 ×1023 molecules of CO2.
1 molecule of CO2 have 2 oxygen atoms.
So, 88 g (2 moles) of CO2 → 2×2 × 6.022 ×1023 atoms of oxygen.
1 mole of CO → 28 g
1 molecule of CO have 1 oxygen atom.
⇒ 6.022 ×1023 oxygen atoms present in 28 g CO.
∴ 4×6.022×1023 oxygen atoms present in 28 × 4 = 112 g of CO
So, 112 g of CO will have the same number of oxygen present as in 88 g of CO2.