The correct answer is The mass ratio of S to O in SO divided by the mass ratio of S to O in SO2 is 2 :1.
When two elements can combine to form two or more different compounds, the mass of one element compared to the fixed mass of the other will always be in a ratio of small whole numbers.
As we all know,
Oxygen mass = 16 g
Sulfur mass = 32 g
Sulfur mass in SO = 32 g
The mass of oxygen in SO is 16 g.
Sulfur to oxygen mass ratio in SO =..... (1)
Sulfur mass in SO2 = 32 g
Oxygen mass in SO2 = (2 16)g = 32 g
Sulfur to oxygen mass ratio in SO2 =..... (1)
The S/O ratio in SO is 2: 1.
The S/O ratio in SO2 is 1: 1.
Taking the ratios 1 and 2, we get:
the mass ratio of S to O in SO to mass ratio of S to O in SO2 is 2 : 1
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