Question

Given the balanced equation, 2 so2 + o2 imported asset 2 so3, what is the molar ratio of o2 to so3?

Answer 1

Molar ratio of O2 to SO3 is 1 : 2

Given balanced equation:
`2SO_(2) + O_(2)\rightarrow 2SO_(3)`

`2 SO_(2) + 1 O_(2)\rightarrow 2 SO_(3)`

The molar ratio is also called the mole ratio or mole-to-mole ratio. A molar ratio is ​the ratio between the amounts in moles of any two compounds involved in a balanced chemical reaction.

The mole ratio is determined by examining the coefficients in front of formulas in a balanced chemical equation. Coefficients are the number present in front of the compound or formula.

In our given balanced equation the coefficient of O2 is 1 and coefficient of SO3 is 2.

Note : In the given balanced chemical equation, no coefficient is present in front of O2 so when there is no coefficient present in front of any compound we will take the coefficient as 1.

So the mole ratio or molar ratio of O2 to SO3 is 1 : 2