C12 - Sulfur

Question 1

Sulfur can come from

Answer 1

volcanoes

Question 2

What are the uses of sulfuric acid

Answer 2

Used in labs and schools

A dehydrating agent

Question 3

Steps of the contact process and making sulfuric acid

Answer 3

1. S(s) + O2(g) ==> SO2(g)
2. 2SO2(g) + O2(g) <==> 2SO3(g)
   SO3 = sulfur trioxide
3. SO3(g) + H2SO4(I) ==> H2S2O7
4. H2S2O7(I) + H2O(I) ==> 2H2SO4(I)

Question 4

What is another word for H2S2O7

Answer 4

oleum

Question 5

Why we can’t make sulfuric acid directly from SO3 + H2O ==> H2SO4

Answer 5

this part of the process is incredibly exothermic and it releases too much heat.
Sulfur trioxide instantly vaporizes (acidic mist)