Question

41. A sample of ozonised oxygen contains 60% ozone by weight then. What is the average molecular
weight of mixture
A) 75
B) 50
C) 15
D)40​

Answer 1

Answer:

The Average Molecular Weight of a mixture is computed from the molar composition and the molecular weight. It is a weighted average -- the molecular weights are averaged using the mole fractions as weights

Answer 2

Answer:

The average molecular weight of the mixture is 75%

Explanation:

Given,

• Ozonised oxygen contains ozone = 60%

To find:

• The average molecular weight of the mixture.

Solution:

• Molecular mass of Oxygen = 32
• Molecular mass pf ozone = 48
• Average molecular weight of oxidized ozone = 36
• { Note : 100 is the overall percentage}
• Let the average molecular weight be x

$32x + 48 (100-x) = 36 * 100$

32x - 48x + 4800 = 3600

- 16 x = - 1200

x = 75%

Therefore the average molecular weight of the mixture is 75%.

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