Question

In the reaction \[\ce{2SO_{2_{(g)}} O_{2_{(g)}} -> 2SO_{3_{(g)}}}\], the rate of disappearance of SO₂ is 1.28 × 10^-5 M/s. What is the rate of appearance of SO₃?

Options

• 2.56 × 10^-5 M/s

• 1.25 × 10^-5 M/s

• 0.64 × 10^-5 M/s

• 0.32 × 10^-5 M/s

Answer 1

1.25 × 10^-5 M/s

Explanation:

\[\ce{2SO_{2_{(g)}} O_{2_{(g)}} -> 2SO_{3_{(g)}}}\]

`(- 1)/2 ("dSO"_2)/"dt" = 1/2 ("dSO"_3)/"dt"`

In the above reaction,

Rate of disappearance of SO₂ = Rate of formation of SO₃

= 1.28 × 10^-3 M/s = 1.25 × 10^-5 M/s